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    Доц. д-р  Сунай Ибрямов Ибрямов
    Доц. д-р Сунай Ибрямов Ибрямов

    Факултет: Факултет по природни науки

    Катедра: ФИЗИКА И АСТРОНОМИЯ

    Кабинет: Корпус 3, стая 422

    Телефон: 054 830495 вътр. 353 К3

    Email: s.ibryamov@shu.bg

    Приемно време: петък: от 12:30 до 14:30 ч.


    2016 Ибрямов, С., 2016, "Активност на звезди от тип T Tauri и сходни на тях обекти", 262 стр., Институт по астрономия с Национална астрономическа обсерватория, БАН, гр. София
    2023 Abe, H., Abe, S., Acciari, V. A., Agudo, I., Aniello, T., Ansoldi, S., Antonelli, L. A., Arbet-Engels, A., Arcaro, C., Artero, M., Asano, K., Baack, D., Babic, A., Baquero, A., Barres de Almeida, U., Barrio, J. A., Batkovic, I., Baxter, J., Becerra Gonzalez, J., Bednarek, W., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bosnjak, Z., Burelli, I., Busetto, G., Carosi, R., Carretero-Castrillo, M., Castro-Tirado, A. J., Ceribella, G., Chai, Y., Chilingarian, A., Cikota, S., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., DAmico, G., DElia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Del Popolo, A., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Emery, G., Escudero, J., Fallah Ramazani, V., Farina, L., Fattorini, A., Foffano, L., Font, L., Fruck, C., Fukami, S., Fukazawa, Y., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giesbrecht Paiva, J. G., Giglietto, N., Giordano, F., Gliwny, P., Godinovic, N., Grau, R., Green, D., Green, J. G., Hadasch, D., Hahn, A., Hassan, T., Heckmann, L., Herrera, J., Hrupec, D., Hutten, M., Imazawa, R., Inada, T., Iotov, R., Ishio, K., Jimenez Martinez, I., Jormanainen, J., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Linhoff, L., Lombardi, S., Longo, F., Lopez-Coto, R., Lopez-Moya, M., Lopez-Oramas, A., Loporchio, S., Lorini, A., Lyard, E., Machado de Oliveira Fraga, B., Majumdar, P., Makariev, M., Maneva, G., Mang, N., Manganaro, M., Mangano, S., Mannheim, K., Mariotti, M., Martinez, M., Mas-Aguilar, A., Mazin, D., Menchiari, S., Mender, S., Micanovic, S., Miceli, D., Miener, T., Miranda, J. M., Mirzoyan, R., Molina, E., Mondal, H. A., Moralejo, A., Morcuende, D., Moreno, V., Nakamori, T., Nanci, C., Nava, L., Neustroev, V., Nievas Rosillo, M., Nigro, C., Nilsson, K., Nishijima, K., Njoh Ekoume, T., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Okumura, A., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletic, L., Persic, M., Pihet, M., Pirola, G., Podobnik, F., Prada Moroni, P. G., Prandini, E., Principe, G., Priyadarshi, C., Rhode, W., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schmuckermaier, F., Schubert, J. L., Schweizer, T., Sitarek, J., Sliusar, V., Sobczynska, D., Spolon, A., Stamerra, A., Striskovic, J., Strom, D., Strzys, M., Suda, Y., Suric, T., Tajima, H., Takahashi, M., Takeishi, R., Tavecchio, F., Temnikov, P., Terauchi, K., Terzic, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., van Scherpenberg, J., Vazquez Acosta, M., Ventura, S., Verguilov, V., Viale, I., Vigorito, C. F., Vitale, V., Vovk, I., Walter, R., Will, M., Wunderlich, C., Yamamoto, T., Zaric, D., Cerruti, M., Acosta-Pulido, J. A., Apolonio, G., Bachev, R., Balokovic, M., Benitez, E., Bjorklund, I., Bozhilov, V., Brown, L. F., Bugg, A., Carbonell, W., Carnerero, M. I., Carosati, D., Casadio, C., Chamani, W., Chen, W. P., Chigladze, R. A., Damljanovic, G., Epps, K., Erkenov, A., Feige, M., Finke, J., Fuentes, A., Gazeas, K., Giroletti, M., Grishina, T. S., Gupta, A. C., Gurwell, M. A., Heidemann, E., Hiriart, D., Hou, W. J., Hovatta, T., Ibryamov, S., Joner, M. D., Jorstad, S. G., Kania, J., Kiehlmann, S., Kimeridze, G. N., Kopatskaya, E. N., Kopp, M., Korte, M., Kotas, B., Koyama, S., Kramer, J. A., Kunkel, L., Kurtanidze, S. O., Kurtanidze, O. M., Lahteenmaki, A., Lopez, J. M., Larionov, V. M., Larionova, E. G., Larionova, L. V., Leto, C., Lorey, C., Mujica, R., Madejski, G. M., Marchili, N., Marscher, A. P., Minev, M., Modaressi, A., Morozova, D. A., Mufakharov, T., Myserlis, I., Nikiforova, A. A., Nikolashvili, M. G., Ovcharov, E., Perri, M., Raiteri, C. M., Readhead, A. C. S., Reimer, A., Reinhart, D., Righini, S., Rosenlehner, K., Sadun, A. C., Savchenko, S. S., Scherbantin, A., Schneider, L., Schoch, K., Seifert, D., Semkov, E., Sigua, L. A., Singh, C., Sola, P., Sotnikova, Y., Spencer, M., Steineke, R., Stojanovic, M., Strigachev, A., Tornikoski, M., Traianou, E., Tramacere, A., Troitskaya, Yu. V., Troitskiy, I. S., Trump, J. B., Tsai, A., Valcheva, A., Vasilyev, A. A., Verrecchia, F., Villata, M., Vince, O., Vrontaki, K., Weaver, Z. R., Zaharieva, E., Zottmann, N., Multimessenger Characterization of Markarian 501 during Historically Low X-Ray and gamma-Ray Activity, 2023, Astrophysical Journal Supplement Series, vol. 266, issue 2, id. 37, 43 pp. (ISSN: 0067-0049, eISSN: 1538-4365, IF(2022)=8.7, Q1, Web of Science, Scopus, https://doi.org/10.3847/1538-4365/acc181)
    2023 Raiteri, C. M., Villata, M., Jorstad, S. G., Marscher, A. P., Acosta Pulido, J. A., Carosati, D., Chen, W. P., Joner, M. D., Kurtanidze, S. O., Lorey, C., Marchini, A., Matsumoto, K., Mirzaqulov, D. O., Savchenko, S. S., Strigachev, A., Vince, O., Aceti, P., Apolonio, G., Arena, C., Arkharov, A., Bachev, R., Bader, N., Banfi, M., Bonnoli, G., Borman, G. A., Bozhilov, V., Brown, L. F., Carbonell, W., Carnerero, M. I., Damljanovic, G., Dhiman, V., Ehgamberdiev, S. A., Elsaesser, D., Feige, M., Gabellini, D., Galan, D., Galli, G., Gaur, H., Gazeas, K., Grishina, T. S., Gupta, A. C., Hagen-Thorn, V. A., Hallum, M. K., Hart, M., Hasuda, K., Heidemann, K., Horst, B., Hou, W.-J., Ibryamov, S., Ivanidze, R. Z., Jovanovic, M. D., Kimeridze, G. N., Kishore, S., Klimanov, S., Kopatskaya, E. N., Kurtanidze, O. M., Kushwaha, P., Lane, D. J., Larionova, E. G., Leonini, S., Lin, H. C., Mannheim, K., Marino, G., Minev, M., Modaressi, A., Morozova, D. A., Mortari, F., Nazarov, S. V., Nikolashvili, M. G., Otero Santos, J., Ovcharov, E., Papini, R., Pinter, V., Privitera, C. A., Pursimo, T., Reinhart, D., Roberts, J., Romanov, F. D., Rosenlehner, K., Sakamoto, T., Salvaggio, F., Schoch, K., Semkov, E., Seufert, J., Shakhovskoy, D., Sigua, L. A., Singh, C., Steineke, R., Stojanovic, M., Tripathi, T., Troitskaya, Y. V., Troitskiy, I. S., Tsai, A., Valcheva, A., Vasilyev, A. A., Vrontaki, K., Weaver, Z. R., Wooley, J. H. F., Zaharieva, E., Zhovtan, A. V., The optical behaviour of BL Lacertae at its maximum brightness levels: a blend of geometry and energetics, 2023, Monthly Notices of the Royal Astronomical Society, vol. 522, issue 1, pp. 102-116 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2022)=4.8, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stad942)
    2023 Ibryamov, S., Zidarova, G., Semkov, E., Peneva, S., Study of the Long-term BVRcIc Photometric Variability of Eight PMS Stars in the Young Open Cluster Trumpler 37, 2023, Research in Astronomy and Astrophysics, vol. 23, issue 8, id. 085006, 10 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2022)=1.8, Q2, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/acd8a0)
    2023 Dhiman, V., Gupta, A. C., Kurtanidze, S. O., Eglitis, I., Strigachev, A., Damljanovic, G., Wiita, P. J., Gu, M., Gaur, H., Vince, O., Bachev, R., Bisen, D. P., Ibryamov, S., Ivanidze, R. Z., Jovanovic, M. D., Kurtanidze, O. M., Nikolashvili, M. G., Semkov, E., Spassov, B., Stojanovic, M., Villarroel, B., Xu, H., Zhang, Z., Multiband optical variability of the TeV blazar PG 1553 + 113 in 2019, 2023, Monthly Notices of the Royal Astronomical Society, vol. 519, issue 2, pp. 2796-2811 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2022)=4.8, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stac3709)
    2023 Raiteri, C. M., Villata, M., Carnerero, M. I., Savchenko, S. S., Kurtanidze, S. O., Vlasyuk, V. V., Marchini, A., Matsumoto, K., Lorey, C., Joner, M. D., Gazeas, K., Carosati, D., Mirzaqulov, D. O., Acosta Pulido, J. A., Agudo, I., Bachev, R., Benitez, E., Borman, G. A., Calcidese, P., Chen, W. P., Damljanovic, G., Ehgamberdiev, S. A., Elsasser, D., Feige, M., Frasca, A., Gaur, H., Grishina, T. S., Gupta, A. C., Hiriart, D., Holland, M., Horst, B., Ibryamov, S., Ivanidze, R. Z., Jensen, J., Jithesh, V., Jovanovic, M. D., Kiehlmann, S., Kimeridze, G. N., Kishore, S., Kopatskaya, E. N., Kurtanidze, O. M., Larionova, E. G., Lin, H. C., Mannheim, K., Marinelli, C., Moreira Reyes, J., Morozova, D. A., Nikolashvili, M. G., Reinhart, D., Romanov, F. D., Semkov, E., Seufert, J., Shishkina, E. V., Sigua, L. A., Skalidis, R., Spiridonova, O. I., Stojanovic, M., Strigachev, A., Troitskaya, Y. V., Troitskiy, I. S., Tsai, A., Vasilyev, A. A., Vince, O., Vrontaki, K., Wani, K., Watts, D., Zhovtan, A. V., Extreme photometric and polarimetric variability of blazar S4 0954+65 at its maximum optical and gamma-ray brightness levels, 2023, Monthly Notices of the Royal Astronomical Society, vol. 526, issue 3, pp. 4502-4513 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2022)=4.8, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stad3064)
    2022 Mutafov, A., Semkov, E., Peneva, S., Ibryamov, S., New results from long-term photometric study of UX Orionis star GM Cephei, 2022, Bulgarian Astronomical Journal, vol. 36, p. 3-8 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2021)=0.138, Q4, Web of Science, Scopus)
    2022 Zidarova, G., Ibryamov, S., Semkov, E., Peneva, S., Long-term optical photometry of the PMS stars V2764 Ori and LkHa 301 in the field of the McNeil‘s Nebula, 2022, Bulgarian Astronomical Journal, vol. 37, p. 54-61 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2021)=0.138, Q4, Web of Science, Scopus)
    2022 Jorstad, S. G., Marscher, A. P., Raiteri, C. M., Villata, M., Weaver, Z. R., Zhang, H., Dong, L., Gomez, J. L., Perel, M. V., Savchenko, S. S., Larionov, V. M., Carosati, D., Chen, W. P., Kurtanidze, O. M., Marchini, A., Matsumoto, K., Mortari, F., Aceti, P., Acosta-Pulido, J. A., Andreeva, T., Apolonio, G., Arena, C., Arkharov, A., Bachev, R., Banfi, M., Bonnoli, G., Borman, G. A., Bozhilov, V., Carnerero, M. I., Damljanovic, G., Ehgamberdiev, S. A., Elsasser, D., Frasca, A., Gabellini, D., Grishina, T. S., Gupta, A. C., Hagen-Thorn, V. A., Hallum, M. K., Hart, M., Hasuda, K., Hemrich, F., Hsiao, H. Y., Ibryamov, S., Irsmambetova, T. R., Ivanov, D. V., Joner, M. D., Kimeridze, G. N., Klimanov, S. A., Knott, J., Kopatskaya, E. N., Kurtanidze, S. O., Kurtenkov, A., Kuutma, T., Larionova, E. G., Leonini, S., Lin, H. C., Lorey, C., Mannheim, K., Marino, G., Minev, M., Mirzaqulov, D. O., Morozova, D. A., Nikiforova, A. A., Nikolashvili, M. G., Ovcharov, E., Papini, R., Pursimo, T., Rahimov, I., Reinhart, D., Sakamoto, T., Savaggio, F., Semkov, E., Shakhovskoy, D. N., Sigua, L. A., Steineke, R., Stojanovic, M., Strigachev, A., Troitskaya, Y. V., Troitskiy, I. S., Tsai, A., Valcheva, A., Vasilyev, A. A., Vince, O., Waller, L., Zaharieva, E., Chatterjee, R., Rapid quasi-periodic oscillations in the relativistic jet of BL Lacertae, 2022, Nature, vol. 609, p. 265-268 (ISSN: 0028-0836, eISSN: 1476-4687, IF(2021)=69.504, Q1, Web of Science, Scopus, https://doi.org/10.1038/S41586-022-05038-9)
    2022 Mutafov, A., Semkov, E., Peneva, S., Ibryamov, S., Long-term photometric study of the pre-main sequence star V1180 Cas, 2022, Research in Astronomy and Astrophysics, vol. 22, issue 12, id. 125014, 8 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2021)=1.889, Q2, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/ac9af0)
    2021 Ibryamov, S., Zidarova, G., Semkov, E., Peneva, S., Long-term V(RI)c CCD photometry of pre-main-sequence stars in the association Cepheus OB3, 2021, Research in Astronomy and Astrophysics, vol. 21, issue 8, id. 192, 8 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2020)=1.469, Q3, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/21/8/192)
    2021 Ibryamov, S., Semkov, E., A new prolonged decrease event in the brightness of the young stellar object V2492 Cygni, 2021, Bulgarian Astronomical Journal, vol. 35, p. 54-59 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2020)=0.259, Q4, Web of Science, Scopus)
    2021 Semkov, E. H., Peneva, S. P., Ibryamov, S. I., Long-term optical photometric monitoring of the FUor star V900 Mon, 2021, Serbian Astronomical Journal, vol. 202, p. 31-38 (ISSN: 1450-698X, eISSN: 1820-9289, IF(2020)=0.333, Q4, Web of Science, Scopus, https://doi.org/10.2298/SAJ2102031S)
    2021 Georgiev, Ts. B., Zamanov, R. K., Boeva, S., Latev, G., Spassov, B., Marti, J., Nikolov, G., Ibryamov, S., Tsvetkova, S. V., Stoyanov, K. A., Intra-night flickering of RS Ophiuchi: IV. Shapes of repeating time structures and their evolution, 2021, Bulgarian Astronomical Journal, vol. 34, p. 55-69 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2020)=0.259, Q4, Web of Science, Scopus)
    2021 Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Artero, M., Asano, K., Babic, A., Baquero, A., Barres de Almeida, U., Barrio, J. A., Batkovic, I., Becerra Gonzalez, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Blanch, O., Bosnjak, Z., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D Amico, G., D Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Dominis Prester, D., Donini, A., Doro, M., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinovic, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., Hutten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jimenez, I., Jormanainen, J., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Lopez-Coto, R., Lopez-Moya, M., Lopez-Oramas, A., Loporchio, S., Machado de Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Menchiari, S., Mender, S., Micanovic, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletic, L., Penil, P., Perennes, C., Persic, M., Prada Moroni, P. G., Prandini, E., Priyadarshi, C., Puljak, I., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schmidt, K., Schweizer, T., Sitarek, J., Snidaric, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suric, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzic, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Zaric, D., Baack, D., Balbo, M., Biederbeck, N., Biland, A., Bretz, T., Buss, J., Dorner, D., Eisenberger, L., Elsaesser, D., Hildebrand, D., Iotov, R., Mannheim, K., Neise, D., Noethe, M., Paravac, A., Rhode, W., Schleicher, B., Sliusar, V., Walter, R., D Ammando, F., Horan, D., Lien, A. Y., Balokovic, M., Madejski, G. M., Perri, M., Verrecchia, F., Leto, C., Lahteenmaki, A., Tornikoski, M., Ramakrishnan, V., Jarvela, E., Vera, R. J. C., Villata, M., Raiteri, C. M., Gupta, A. C., Pandey, A., Fuentes, A., Agudo, I., Casadio, C., Semkov, E., Ibryamov, S., Marchini, A., Bachev, R., Strigachev, A., Ovcharov, E., Bozhilov, V., Valcheva, A., Zaharieva, E., Damljanovic, G., Vince, O., Larionov, V. M., Borman, G. A., Grishina, T. S., Hagen-Thorn, V. A., Kopatskaya, E. N., Larionova, E. G., Larionova, L. V., Morozova, D. A., Nikiforova, A. A., Savchenko, S. S., Troitskiy, I. S., Troitskaya, Y. V., Vasilyev, A. A., Merkulova, O. A., Chen, W. P., Samal, M., Lin, H. C., Moody, J. W., Sadun, A. C., Jorstad, S. G., Marscher, A. P., Weaver, Z. R., Feige, M., Kania, J., Kopp, M., Kunkel, L., Reinhart, D., Scherbantin, A., Schneider, L., Lorey, C., Acosta-Pulido, J. A., Carnerero, M. I., Carosati, D., Kurtanidze, S. O., Kurtanidze, O. M., Nikolashvili, M. G., Chanishvili, R. G., Chigladze, R. A., Ivanidze, R. Z., Kimeridze, G. N., Sigua, L. A., Joner, M. D., Spencer, M., Giroletti, M., Marchili, N., Righini, S., Rizzi, N., Bonnoli, G., Investigation of the correlation patterns and the Compton dominance variability of Mrk 421 in 2017, 2021, Astronomy & Astrophysics, vol. 655, id. A89, 36 p. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2020)=5.802, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/202141004)
    2021 Semkov, E., Ibryamov, S., Peneva, S., The FUor Star V2493 Cyg (HBC 722) - Eleven Years at Maximum Brightness, 2021, Symmetry, vol. 13, issue 12, id. 2433, 11 pp. (eISSN: 2073-8994, IF(2020)=2.713, Q2, Web of Science, Scopus, https://doi.org/10.3390/sym13122433)
    2020 Ibryamov, S., Semkov, E., New four-color optical photometry of the young stars V521 Cyg and FHO 27, 2020, Bulgarian Astronomical Journal, vol. 32, p. 96-107 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2019)=0.189, Q4, Web of Science, Scopus)
    2020 Kjurkchieva, D., Marchev, D., Borisov, B., Ibryamov, S., Dimitrov, D., Popov, V., Milev, Al., Petrov, N., The 40 cm remote-controlled telescope Meade LX200ACF of the Shumen Astronomical Observatory, 2020, Bulgarian Astronomical Journal, vol. 32, p. 113-122 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2019)=0.189, Q4, Web of Science, Scopus)
    2020 Larionov, V. M., Jorstad, S. G., Marscher, A. P., Villata, M., Raiteri, C. M., Smith, P. S., Agudo, I., Savchenko, S. S., Morozova, D. A., Acosta-Pulido, J. A., Aller, M. F., Aller, H. D., Andreeva, T. S., Arkharov, A. A., Bachev, R., Bonnoli, G., Borman, G. A., Bozhilov, V., Calcidese, P., Carnerero, M. I., Carosati, D., Casadio, C., Chen, W.-P., Damljanovic, G., Dementyev, A. V., Di Paola, A., Frasca, A., Fuentes, A., Gomez, J. L., Gonzalez-Morales, P., Giunta, A., Grishina, T. S., Gurwell, M. A., Hagen-Thorn, V. A., Hovatta, T., Ibryamov, S., Joshi, M., Kiehlmann, S., Kim, J.-Y., Kimeridze, G. N., Kopatskaya, E. N., Kovalev, Yu A., Kovalev, Y. Y., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Lazaro, C., Larionova, L. V., Larionova, E. G., Leto, G., Marchini, A., Matsumoto, K., Mihov, B., Minev, M., Mingaliev, M. G., Mirzaqulov, D., Munoz Dimitrova, R. V., Myserlis, I., Nikiforova, A. A., Nikolashvili, M. G., Nizhelsky, N. A., Ovcharov, E., Pressburger, L. D., Rakhimov, I. A., Righini, S., Rizzi, N., Sadakane, K., Sadun, A. C., Samal, M. R., Sanchez, R. Z., Semkov, E., Sergeev, S. G., Sigua, L. A., Slavcheva-Mihova, L., Sola, P., Sotnikova, Yu V., Strigachev, A., Thum, C., Traianou, E., Troitskaya, Yu V., Troitsky, I. S., Tsybulev, P. G., Vasilyev, A. A., Vince, O., Weaver, Z. R., Williamson, K. E., Zhekanis, G. V., Multiwavelength behaviour of the blazar 3C 279: decade-long study form y-ray to radio, 2020, Monthly Notices of the Royal Astronomical Society, vol. 492, issue 3, p. 3829-3848 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2019)=5.356, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/staa082)
    2020 Kjurkchieva, D., Ibryamov, S., Global Parameters of the Newly-discovered W UMa Stars WISEJ004327.7+722407 and WISEJ234557.8+510456, 2020, Serbian Astronomical Journal, vol. 200, p. 19-23 (ISSN: 1450-698X, eISSN: 1820-9289, IF(2019)=0.565, Q4, Web of Science, Scopus, https://doi.org/10.2298/SAJ2000019K)
    2020 Pienkowski, D., Galan, C., Tomov, T., Gazeas, K., Wychudzki, P., Mikolajewski, M., Kubicki, D., Staels, B., Zola, S., Pakonska, P., Debski, B., Kundera, T., Ogloza, W., Drozdz, M., Baran, A., Winiarski, M., Siwak, M., Dimitrov, D., Kjurkchieva, D., Marchev, D., Arminski, A., Miller, I., Kolaczkowski, Z., Mozdzierski, D., Zahajkiewicz, E., Brus, P., Pigulski, A., Smela, T., Conseil, E., Boyd, D., Conidis, G. J., Plauchu-Frayn, I., Heras, T. A., Kardasis, E., Biskupski, M., Kneip, R., Hambalek, L., Pribulla, T., Kundra, E., Garai, Z., Rodriguez, D., Kaminski, T., Dubois, F., Logie, L., Capetillo Blanco, A., Kankiewicz, P., Swierczynski, E., Martignoni, M., Sergey, I., Kare Trandem Qvam, J., Semkov, E., Ibryamov, S., Peneva, S., Gonzalez Carballo, J.-L., Ribeiro, J., Dean, S., Apostolovska, G., Donchev, Z., Corp, L., McDonald, P., Rodriguez, M., Sanchez, A., Wiersema, K., Conseil, E., Menke, J., Sergey, I., Richardson, N., International observational campaign of the 2014 eclipse of EE Cephei, Astronomy & Astrophysics, vol. 639, id. A23, 9 pp. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2019)=5.636, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/201937181)
    2020 Georgiev, Ts. B., Zamanov, R. K., Boeva, S., Latev, G., Spassov, B., Marti, J., Nikolov, G., Ibryamov, S., Tsvetkova, S. V., Stoyanov, K. A., Intra-night flickering of RS Ophiuchi: III. Modes of quasi-periods in the minute scale and their evolution, 2020, Bulgarian Astronomical Journal, vol. 33, p. 3-16 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2019)=0.189, Q4, Web of Science, Scopus)
    2020 Georgiev, Ts. B., Zamanov, R. K., Boeva, S., Latev, G., Spassov, B., Marti, J., Nikolov, G., Ibryamov, S., Tsvetkova, S. V., Stoyanov, K. A., Intra-night flickering of RS Ophiuchi: II. Exponentially distributed quasi-period modes, 2020, Bulgarian Astronomical Journal, vol. 32, p. 35-62 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2019)=0.189, Q4, Web of Science, Scopus)
    2020 Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Baack, D., Babic, A., Banerjee, B., Barres de Almeida, U., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bellizzi, L. K., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bosnjak, Z., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colin, U., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D Elia, V., da Vela, P., Dazzi, F., de Angelis, A., de Lotto, B., Del Puppo, F., Delfino, M., Delgado, J., Depaoli, D., di Pierro, F., di Venere, L., Do Souto Espineira, E., Prester, D. Dominis, Donini, A., Dorner, D., Doro M., Elsaesser, D., Ramazani, V. Fallah; Fattorini, A., Ferrara, G., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinovic, N., Green, D., Hadasch, D., Hahn, A., Herrera, J., Hoang, J., Hrupec, D., Hutten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jouvin, L., Kajiwara, Y., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Loporchio, S., Machado de Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Mender, S., Micanovic, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogues, L., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletic, L., Penil, P., Peresano, M., Persic, M., Moroni, P. G. Prada, Prandini, E., Puljak, I., Rhode, W., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Snidaric, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suric, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzic, T., Teshima, M., Torres-Alba, N., Tosti, L., van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Zaric, D., Petropoulou, M., Finke, J., D Ammando, F., Balokovic, M., Madejski, G., Mori, K., Puccetti, Simonetta, Leto, C., Perri, M., Verrecchia, F., Villata, M., Raiteri, C. M., Agudo, I., Bachev, R., Berdyugin, A., Blinov, D. A., Chanishvili, R., Chen, W. P., Chigladze, R., Damljanovic, G., Eswaraiah, C., Grishina, T. S., Ibryamov, S., Jordan, B., Jorstad, S. G., Joshi, M., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Larionova, E. G., Larionova, L. V., Larionov, V. M., Latev, G., Lin, H. C., Marscher, A. P., Mokrushina, A. A., Morozova, D. A., Nikolashvili, M. G., Semkov, E., Smith, P. S., Strigachev, A., Troitskaya, Yu. V., Troitsky, I. S., Vince, O., Barnes, J., Guver, T., Moody, J. W., Sadun, A. C., Hovatta, T., Richards, J. L., Max-Moerbeck, W., Readhead, A. C. S., Lahteenmaki, A., Tornikoski, M., Tammi, J., Ramakrishnan, V., Reinthal, R., Unraveling the Complex Behavior of Mrk 421 with Simultaneous X-Ray and VHE Observations during an Extreme Flaring Activity in 2013 April, 2020, Astrophysical Journal Supplement Series, vol. 248, issue 2, id. 29 (IF(2019)=7.950, Q1, Web of Science, Scopus, https://doi.org/10.3847/1538-4365/ab89b5)
    2020 Weaver, Z. R., Williamson, K. E., Jorstad, S. G., Marscher, A. P., Larionov, V. M., Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., Bachev, R., Baida, G. V., Balonek, T. J., Benitez, E., Borman, G. A., Bozhilov, V., Carnerero, M. I., Carosati, D., Chen, W. P., Damljanovic, G., Dhiman, V., Dougherty, D. J., Ehgamberdiev, S. A., Grishina, T. S., Gupta, A. C., Hart, M., Hiriart, D., Hsiao, H. Y., Ibryamov, S., Joner, M., Kimeridze, G. N., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Larionova, E. G., Matsumoto, K., Matsumura, R., Minev, M., Mirzaqulov, D. O., Morozova, D. A., Nikiforova, A. A., Nikolashvili, M. G., Ovcharov, E., Rizzi, N., Sadun, A., Savchenko, S. S., Semkov, E., Slater, J. J., Smith, K. L., Stojanovic, M., Strigachev, A., Troitskaya, Yu. V., Troitsky, I. S., Tsai, A. L., Vince, O., Valcheva, A., Vasilyev, A. A., Zaharieva, E., Zhovtan, A. V., Multiwavelength variability of BL Lacertae measured with high time resolution, 2020, Astrophysical Journal, vol. 900, issue 2, id. 137, 26 pp., (ISSN: 0004-637X, eISSN: 1538-4357, IF(2019)=5.745, Q1, Web of Science, Scopus, https://doi.org/10.3847/1538-4357/aba693)
    2020 Ibryamov, S., Semkov, E., Peneva, S., Gocheva, K., BV(RI)c photometric study of three variable PMS stars in the field of V733 Cephei, 2020, Research in Astronomy and Astrophysics, vol. 20, issue 12, id. 194, 8 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2019)=1.512, Q3, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/20/12/194)
    2019 Mutafov, A. S., Semkov, E. H., Ibryamov, S. I., Peneva, S. P., Long-time photometric study of UX Orionis stars, 2019, AIP Conference Proceedings, vol. 2075, issue 1, id. 090004 (ISSN: 0094-243X, eISSN: 1551-7616, SJR(2018)=0.182, Web of Science, Scopus, https://doi.org/10.1063/1.5091218)
    2019 Georgiev, Ts. B., Zamanov, R. K., Boeva, S., Latev, G., Spassov, B., Marti, J., Nikolov, G., Ibryamov, S., Tsvetkova, S. V., Stoyanov, K. A., Intra-night flickering of RS Ophiuchi: I. Sizes and cumulative energies of time structures, 2019, Bulgarian Astronomical Journal, vol. 30, p. 83-98 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2018)=0.158, Q4, Web of Science, Scopus)
    2019 Gaur, H., Gupta, A. C., Bachev, R., Strigachev, A., Semkov, E., Wiita, P. J., Kurtanidze, O. M., Darriba, A., Damljanovic, G., Chanishvili, R. G., Ibryamov, S., Kurtanidze, S. O., Nikolashvili, M. G., Sigua, L. A., Vince, O., Optical variability of TeV blazars on long time-scales, 2019, Monthly Notices of the Royal Astronomical Society, vol. 484, issue 4, p. 5633-5644 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2018)=5.231, Q1, Web of Science, https://doi.org/10.1093/mnras/stz322)
    2019 Ibryamov, S., Semkov, E., A new fade event in the optical brightness of the young stellar object V2492 Cygni, 2019, Astronomers Telegram, no. 12727 (ISSN: 1920-406X, SAO/NASA Astrophysics Data System)
    2019 Kjurkchieva, D., Petrov, N., Ibryamov, S., New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b, 2019, Serbian Astronomical Journal, vol. 198, p. 55-60 (ISSN: 1450-698X, eISSN: 1820-9289, IF(2018)=0.833, Q4, Web of Science, Scopus, https://doi.org/10.2298/SAJ181022002K)
    2019 Kjurkchieva, D., Ibryamov, S., Borisov, B., Marchev, D., Popov, V., Dimitrov, D., First observations with the 25 cm telescope of the Shumen Astronomical Observatory, 2019, Bulgarian Astronomical Journal, vol. 31, p. 30-38 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2018)=0.158, Q4, Web of Science, Scopus)
    2019 Kjurkchieva, D., Ibryamov, S., New light curve solution of V568 Peg and first determination of its fundamental parameters, 2019, Bulgarian Astronomical Journal, vol. 31, p. 68-75 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2018)=0.158, Q4, Web of Science, Scopus)
    2019 Raiteri, C. M., Villata, M., Carnerero, M. I., Acosta-Pulido, J. A., Mirzaqulov, D. O., Larionov, V. M., Romano, P., Vercellone, S., Agudo, I., Arkharov, A. A., Bach, U., Bachev, R., Baitieri, S., Borman, G. A., Boschin, W., Bozhilov, V., Butuzova, M. S., Calcidese, P., Carosati, D., Casadio, C., Chen, W.-P., Damljanovic, G., Di Paola, A., Doroshenko, V. T., Efimova, N. V., Ehgamberdiev, Sh. A., Giroletti, M., Gomez, J. L., Grishina, T. S., Ibryamov, S., Jermak, H., Jorstad, S. G., Kimeridze, G. N., Klimanov, S. A., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Larionova, E. G., Marscher, A. P., Mihov, B., Minev, M., Molina, S. N., Moody, J. W., Morozova, D. A., Nazarov, S. V., Nikiforova, A. A., Nikolashvili, M. G., Ovcharov, E., Peneva, S., Righini, S., Rizzi, N., Sadun, A. C., Samal, M. R., Savchenko, S. S., Semkov, E., Sigua, L. A., Slavcheva-Mihova, L., Steele, I. A., Strigachev, A., Tornikoski, M., Troitskaya, Yu. V., Troitsky, I. S., Vince, O., The beamed jet and quasar core of the distant blazar 4C 71.07, 2019, Monthly Notices of the Royal Astronomical Society, vol. 489, issue 2, p. 1837-1849 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2018)=5.231, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stz2264)
    2019 Semkov, E. H., Ibryamov, S. I., Peneva, S. P., Photometric and spectroscopic study of five pre-main sequence stars in the vicinity of NGC 7129, 2019, Serbian Astronomical Journal, vol. 199, p. 39-53 (ISSN: 1450-698X, eISSN: 1820-9289, IF(2018)=0.833, Q4, Web of Science, Scopus, https://doi.org/10.2298/SAJ1999039S)
    2018 Ibryamov, S. I., Semkov, E. H., Peneva, S. P., V2492 Cygni: Optical BVRI variability during the period 2010-2017, 2018, Publications of the Astronomical Society of Australia, vol. 35, id. e007, 9 pp. (ISSN: 1323-3580, eISSN: 1448-6083, IF(2018)=4.878, Q1, Web of Science, https://doi.org/10.1017/pasa.2018.2)
    2018 Kjurkchieva, D. P., Dimitrov, D. P., Ibryamov, S. I., Vasileva, D. L., Observations and light curve solutions of ultrashort-period eclipsing binaries, 2018, Publications of the Astronomical Society of Australia, vol. 35, id. e008, 9 pp. (ISSN: 1323-3580, eISSN: 1448-6083, IF(2018)=4.878, Q1, Web of Science, Scopus, https://doi.org/10.1017/pasa.2017.68)
    2018 Kjurkchieva, D., Petrov, N., Ibryamov, S., Nikolov, G., Popov, V., New observations and transit solutions of the exoplanets HAT-P-53b and XO-5b, 2018, Serbian Astronomical Journal, vol. 196, p. 15-20 (ISSN: 1450-698X, eISSN: 1820-9289, IF(2018)=0.833, Q4, Web of Science, Scopus, https://doi.org/10.2298/SAJ1896015K)
    2018 Ibryamov, S., Semkov, E., Peneva, S., Karadeniz, U., Multicolor photometric behavior of the young stellar object V1704 Cygni, 2018, Bulgarian Astronomical Journal, vol. 29, p. 10-18 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2018)=0.158, Q4, Web of Science, Scopus)
    2018 Semkov, E., Peneva, S., Ibryamov, S., Mutafov, A., Long-term photometric observations in the field of the star formation region NGC7129, 2018, Proceedings of the International Astronomical Union, Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe, vol. 13, S336, p. 287-288 (ISSN: 1743-9213, eISSN: 1743-9221, SJR(2018)=0.125, Q4, SAO/NASA Astrophysics Data System, https://doi.org/10.1017/S1743921318000297)
    2018 Semkov, E., Ibryamov, S., A new deep minimum in the light curve of the PMS star V1647 Ori, 2018, Astronomers Telegram, no. 12012 (ISSN: 1920-406X, SAO/NASA Astrophysics Data System)
    2018 Ibryamov, S., Semkov, E., Milanov, T., Peneva, S., Long-term BVRI photometric light curves of 15 PMS stars in the star-forming region IC 5070, 2018, Research in Astronomy and Astrophysics, vol. 18, issue 11, id. 137, 12 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2018)=1.254, Q3 в метриката SJR, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/18/11/137)
    2018 Semkov, E., Ibryamov, S., Peneva, S., Mutafov, A., Long-term photometric monitoring of FUor and FUor-like objects, 2018, Communications of the Byurakan Astrophysical Observatory, vol. 65, issue 2, p. 240-248 (ISSN: 2579-2276, SAO/NASA Astrophysics Data System)
    2018 Mutafov, A. S., Semkov, E. H., Peneva, S. P., Ibryamov, S. I., Photometric study of UX Ori type stars GM Cep and V1180 Cas, 2018, Proceedings of the 11th Bulgarian-Serbian Astronomical Conference, p. 229-237 (ISBN: 978-86-89035-11-7, Scopus)
    2017 Semkov, E. H., Peneva, S. P., Ibryamov, S. I., Photometric and spectroscopic study of the new FUor star V2493 Cyg, 2017, Bulgarian Astronomical Journal, vol. 26, p. 57-66 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2017)=0.174, Q4, Web of Science, Scopus)
    2017 Ibryamov, S. I., Activity of T Tauri type stars and objects similar to them, 2017, Bulgarian Astronomical Journal, vol. 26, p. 110-111 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2017)=0.174, Q4, Web of Science, Scopus)
    2017 Ibryamov, S. I., Semkov, E. H., Milanov, T. R., Peneva, S. P., Long-term photometric behavior of the PMS stars V977 Cep and V982 Cep in the vicinity of NGC 7129, 2017, Research in Astronomy and Astrophysics, vol. 17, issue 2, id. 20, 12 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2017)=1.227, Q2 в метриката SJR, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/17/2/20)
    2017 Ibryamov, S., Semkov, E., Significant increase in the optical brightness of V2492 Cyg, 2017, Astronomers Telegram, no. 10170 (ISSN: 1920-406X, SAO/NASA Astrophysics Data System)
    2017 Raiteri, C. M., Nicastro, F., Stamerra, A., Villata, M., Larionov, V. M., Blinov, D., Acosta-Pulido, J. A., Arevalo, M. J., Arkharov, A. A., Bachev, R., Borman, G. A., Carnerero, M. I., Carosati, D., Cecconi, M., Chen, W.-P., Damljanovic, G., Di Paola, A., Ehgamberdiev, Sh. A., Frasca, A., Giroletti, M., Gonzalez-Morales, P. A., Grinon-Marin, A. B., Grishina, T. S., Huang, P.-C., Ibryamov, S., Klimanov, S. A., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Larionova, E. G., Larionova, L. V., Lazaro, C., Leto, G., Liodakis, I., Martinez-Lombilla, C., Mihov, B., Mirzaqulov, D. O., Mokrushina, A. A., Moody, J. W., Morozova, D. A., Nazarov, S. V., Nikolashvili, M. G., Ohlert, J. M., Panopoulou, G. V., Pastor Yabar, A., Pinna, F., Protasio, C., Rizzi, N., Sadun, A. C., Savchenko, S. S., Semkov, E., Sigua, L. A., Slavcheva-Mihova, L., Strigachev, A., Tornikoski, M., Troitskaya, Yu. V., Troitsky, I. S., Vasilyev, A. A., Vera, R. J. C., Vince, O., Zanmar Sanchez, R., Synchrotron emission from the blazar PG 1553+113. An analysis of its flux and polarization variability, 2017, Monthly Notices of the Royal Astronomical Society, vol. 466, issue 3, p. 3762-3774 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2017)=5.194, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stw3333)
    2017 Kjurkchieva, D. P., Popov, V. A., Ibryamov, S. I., Vasileva, D. L., Petrov, N. I., Observations and light curve solutions of the W UMa binaries V796 Cep, V797 Cep, CSS J015341.9+381641 and NSVS 3853195, 2017, Research in Astronomy and Astrophysics, vol. 17, issue 5, id. 42, 8 pp. (ISSN: 1674-4527, eISSN: 2397-6209, IF(2017)=1.227, Q2 в метриката SJR, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/17/5/42)
    2017 Zamanov, R. K., Latev, G. Y., Boeva, S., Ibryamov, S., Nikolov, G. B., Stoyanov, K. A., The cataclysmic variable AE Aquarii: B-V color of the flares, 2017, Astronomische Nachrichten, vol. 338, issue 5, p. 598-603 (ISSN: 0004-6337, eISSN: 1521-3994, IF(2017)=1.322, Q2 в метриката SJR, Web of Science, Scopus, https://doi.org/10.1002/asna.201713294)
    2017 Semkov, E., Peneva, S., Ibryamov, S., Optical light curves of FUor and FUor-like objects, 2017, Proceedings of the International Astronomical Union, Symposium S325: Astroinformatics, vol. 12, S325, p. 266-269 (ISSN: 1743-9213, eISSN: 1743-9221, SJR(2017)=0.117, Q4, Web of Science, Scopus, https://doi.org/10.1017/S1743921316013144)
    2017 Semkov, E. H., Ibryamov, S. I., Peneva, S. P., A deep decrease event in the brightness of the PMS star V350 Cep, 2017, Bulgarian Astronomical Journal, vol. 27, p. 75-82 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2017)=0.174, Q4, Web of Science, Scopus)
    2017 Kjurkchieva, D., Popov, V., Vasileva, D., Eneva, Y., Ibryamov, S., Observations and light curve solutions of the eclipsing stars CSS J075205.6+381909 and NSVS 691550, 2017, Bulgarian Astronomical Journal, vol. 27, p. 83-88 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2017)=0.174, Q4, Web of Science, Scopus)
    2017 Bachev, R., Popov, V., Strigachev, A., Semkov, E., Ibryamov, S., Spassov, B., Latev, G., Munoz Dimitrova, R. V., Boeva, S., Intra-night variability of the blazar CTA 102 during its 2012 and 2016 giant outbursts, 2017, Monthly Notices of the Royal Astronomical Society, vol. 471, issue 2, p. 2216-2223 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2017)=5.194, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stx1818)
    2017 Gaur, H., Gupta, A. C., Bachev, R., Strigachev, A., Semkov, E., Wiita, P. J., Gu, M., Ibryamov, S., Multi-band intra-night optical variability of BL Lacertae, 2017, Galaxies, vol. 5, issue 4, id. 94, 16 pp. (eISSN: 2075-4434, Web of Science, Scopus, https://doi.org/10.3390/galaxies5040094)
    2017 Carnerero, M. I., Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., Larionov, V. M., Smith, P. S., DAmmando, F., Agudo, I., Arevalo, M. J., Bachev, R., Barnes, J., Boeva, S., Bozhilov, V., Carosati, D., Casadio, C., Chen, W. P., Damljanovic, G., Eswaraiah, E., Forne, E., Gantchev, G., Gomez, J. L., Gonzalez-Morales, P. A., Grinon-Marin, A. B., Grishina, T. S., Holden, M., Ibryamov, S., Joner, M. D., Jordan, B., Jorstad, S. G., Joshi, M., Kopatskaya, E. N., Koptelova, E., Kurtanidze, O. M., Kurtanidze, S. O., Larionova, E. G., Larionova, L. V., Latev, G., Lazaro, C., Ligustri, R., Lin, H. C., Marscher, A. P., Martinez-Lombilla, C., McBreen, B., Mihov, B., Molina, S. N., Moody, J. W., Morozova, D. A., Nikolashvili, M. G., Nilsson, K., Ovcharov, E., Pace, C., Panwar, N., Pastor Yabar, A., Pearson, R. L., Pinna, F., Protasio, C., Rizzi, N., Redondo-Lorenzo, F. J., Rodriguez-Coira, G., Ros, J. A., Sadun, A. C., Savchenko, S. S., Semkov, E., Slavcheva-Mihova, L., Smith, N., Strigachev, A., Troitskaya, Yu. V., Troitsky, I. S., Vasilyev, A. A., Vince, O., Dissecting the long-term emission behaviour of the BL Lac object Mrk 421, 2017, Monthly Notices of the Royal Astronomical Society, vol. 472, issue 4, p. 3789-3804 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2017)=5.194, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stx2185)
    2016 Ibryamov, S. I., Semkov, E. H., Photometric variability of 14 PMS stars in the NGC 7000/IC 5070 complex, 2016, Bulgarian Astronomical Journal, vol. 24, p. 62-88 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2016)=0.192, Q4, Web of Science, Scopus)
    2016 Kjurkchieva, D., Dimitrov, D., Ibryamov, S., Solution of newly observed transit of the exoplanet HAT-P-24b: No TTV and TDV signals, 2016, Bulgarian Astronomical Journal, vol. 24, p. 101-106 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2016)=0.192, Q4, Web of Science, Scopus)
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    2016 Larionov, V. M., Villata, M., Raiteri, C. M., Jorstad, S. G., Marscher, A. P., Agudo, I., Smith, P. S., Acosta-Pulido, J. A., Arevalo, M. J., Arkharov, A. A., Bachev, R., Blinov, D. A., Borisov, G., Borman, G. A., Bozhilov, V., Bueno, A., Carnerero, M. I., Carosati, D., Casadio, C., Chen, W. P., Clemens, D. P., Di Paola, A., Ehgamberdiev, Sh. A., Gomez, J. L., Gonzalez-Morales, P. A., Grinon-Marin, A., Grishina, T. S., Hagen-Thorn, V. A., Ibryamov, S., Itoh, R., Joshi, M., Kopatskaya, E. N., Koptelova, E., Lazaro, C., Larionova, E. G., Larionova, L. V., Manilla-Robles, A., Metodieva, Y., Milanova, Yu. V., Mirzaqulov, D. O., Molina, S. N., Morozova, D. A., Nazarov, S. V., Ovcharov, E., Peneva, S., Ros, J. A., Sadun, A. C., Savchenko, S. S., Semkov, E., Sergeev, S. G., Strigachev, A., Troitskaya, Yu. V., Troitsky, I. S., Exceptional outburst of the blazar CTA 102 in 2012: the GASP-WEBT campaign and its extension, 2016, Monthly Notices of the Royal Astronomical Society, vol. 461, issue 3, p. 3047-3056 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2016)=4.961, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stw1516)
    2015 Ibryamov, S. I., Semkov, E. H., Peneva, S. P., Long-term BVRI light curves of 5 pre-main sequence stars in the field of "Gulf of Mexico", 2015, Bulgarian Astronomical Journal, vol. 22, p. 3-14 (ISSN: 1313-2709, eISSN: 1314-5592, SJR(2015)=0.109, Q4, Web of Science, Scopus)
    2015 Semkov, E. H., Ibryamov, S. I., Peneva, S. P., Milanov, T. R., Stoyanov, K. A., Stateva, I. K., Kjurkchieva, D. P., Dimitrov, D. P., Radeva, V. S., The unusual photometric variability of the PMS star GM Cep, 2015, Publications of the Astronomical Society of Australia, vol. 32, id. e011, 8 pp. (ISSN: 1323-3580, eISSN: 1448-6083, IF(2015)=3.245, Q2, Web of Science, Scopus, https://doi.org/10.1017/pasa.2015.11)
    2015 Ibryamov, S. I., Semkov, E. H., Peneva, S. P., Long-term multicolour photometry of the young stellar objects FHO 26, FHO 27, FHO 28, FHO 29, and V1929 Cygni, 2015, Publications of the Astronomical Society of Australia, vol. 32, id. e021, 18 pp. (ISSN: 1323-3580, eISSN: 1448-6083, IF(2015)=3.245, Q2, Web of Science, Scopus, https://doi.org/10.1017/pasa.2015.21)
    2015 Carnerero, M. I., Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., DAmmando, F., Smith, P. S., Larionov, V. M., Agudo, I., Arevalo, M. J., Arkharov, A. A., Bach, U., Bachev, R., Benitez, E., Blinov, D. A., Bozhilov, V., Buemi, C. S., Bueno Bueno, A., Carosati, D., Casadio, C., Chen, W. P., Damljanovic, G., di Paola, A., Efimova, N. V., Ehgamberdiev, Sh. A., Giroletti, M., Gomez, J. L., Gonzalez-Morales, P. A., Grinon-Marin, A. B., Grishina, T. S., Gurwell, M. A., Hiriart, D., Hsiao, H. Y., Ibryamov, S., Jorstad, S. G., Joshi, M., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Larionova, E. G., Larionova, L. V., Lazaro, C., Leto, P., Lin, C. S., Lin, H. C., Manilla-Robles, A. I., Marscher, A. P., McHardy, I. M., Metodieva, Y., Mirzaqulov, D. O., Mokrushina, A. A., Molina, S. N., Morozova, D. A., Nikolashvili, M. G., Orienti, M., Ovcharov, E., Panwar, N., Pastor Yabar, A., Puerto Gimenez, I., Ramakrishnan, V., Richter, G. M., Rossini, M., Sigua, L. A., Strigachev, A., Taylor, B., Tornikoski, M., Trigilio, C., Troitskaya, Yu. V., Troitsky, I. S., Umana, G., Valcheva, A., Velasco, S., Vince, O., Wehrle, A. E., Wiesemeyer, H., Multiwavelength behaviour of the blazar OJ 248 from radio to gamma-rays, 2015, Monthly Notices of the Royal Astronomical Society, vol. 450, issue 3, p. 2677-2691 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2015)=4.952, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stv823)
    2015 Zamanov, R., Latev, G., Boeva, S., Sokoloski, J. L., Stoyanov, K., Bachev, R., Spassov, B., Nikolov, G., Golev, V., Ibryamov, S., Optical flickering of the recurrent nova RS Ophiuchi: amplitude-flux relation, 2015, Monthly Notices of the Royal Astronomical Society, vol. 450, issue 4, p. 3958-3965 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2015)=4.952, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stv873)
    2015 Agarwal, A., Gupta, A. C., Bachev, R., Strigachev, A., Semkov, E., Wiita, P. J., Bottcher, M., Boeva, S., Gaur, H., Gu, M. F., Peneva, S., Ibryamov, S., Pandey, U. S., Multiband optical-NIR variability of blazars on diverse time-scales, 2015, Monthly Notices of the Royal Astronomical Society, vol. 451, issue 4, p. 3882-3897 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2015)=4.952, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stv1208)
    2015 Kjurkchieva, D. P., Dimitrov, D. P., Ibryamov, S. I., Light curve solutions of six eclipsing binaries at the lower limit of periods for W UMa stars, 2015, Research in Astronomy and Astrophysics, vol. 15, issue 9, p. 1493-1503 (ISSN: 1674-4527, eISSN: 2397-6209, IF(2015)=1.292, Q2 в метриката SJR, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/15/9/006)
    2015 Semkov, E. H., Peneva, S. P., Ibryamov, S. I., The pre-main-sequence star V1184 Tauri (CB 34V) at the end of prolonged eclipse, 2015, Astronomy & Astrophysics, vol. 582, id. A113, 6 pp. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2015)=5.185, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/201526955)
    2015 Furniss, A., Noda, K., Boggs, S., Chiang, J., Christensen, F., Craig, W., Giommi, P., Hailey, C., Harisson, F., Madejski, G., Nalewajko, K., Perri, M., Stern, D., Urry, M., Verrecchia, F., Zhang, W., Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Antoranz, P., Babic, A., Banerjee, B., Bangale, P., Barres de Almeida, U., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bernardini, E., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carmona, E., Carosi, A., Chatterjee, A., Clavero, R., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Lotto, B., de Ona Wilhelmi, E., Delgado Mendez, C., Di Pierro, F., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Eisenacher Glawion, D., Elsaesser, D., Fernandez-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Frantzen, K., Fruck, C., Galindo, D., Garcia Lopez, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Giammaria, P., Godinovic, N., Gonzalez Munoz, A., Guberman, D., Hanabata, Y., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Hughes, G., Idec, W., Kellermann, H., Kodani, K., Konno, Y., Kubo, H., Kushida, J., La Barbera, A., Lelas, D., Lewandowska, N., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Lorenz, E., Majumdar, P., Makariev, M., Mallot, K., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Marcote, B., Mariotti, M., Martinez, M., Mazin, D., Menzel, U., Miranda, J. M., Mirzoyan, R., Moralejo, A., Nakajima, D., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nilsson, K., Nishijima, K., Orito, R., Overkemping, A., Paiano, S., Palacio, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Paredes-Fortuny, X., Persic, M., Poutanen, J., Prada Moroni, P. G., Prandini, E., Puljak, I., Reinthal, R., Rhode, Q., Ribo, M., Rico, J., Rodriguez Garcia, J., Saito, T., Saito, K., Satalecka, K., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpaa, A., Sitarek, J., Snidaric, I., Sobczynska, D., Stamerra, A., Steinbring, T., Strzys, M., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Thaele, J., Torres, D. F., Toyama, T., Treves, A., Verguilov, V., Vovk, I., Will, M., Zanin, R., Archer, A., Bebow, W., Bird, R., Biteau, J., Bugaev, V., Cardenzana, J. V., Cerruti, M., Chen, X., Ciupik, L., Connolly, M. P., Cui, W., Dickinson, H. J., Dumm, J., Eisch, J. D., Falcone, A., Feng, Q., Finley, J. P., Fleischhack, H., Fortin, P., Fortson, L., Gerard, L., Gillanders, G. H., Griffin, S., Griffiths, S. T., Grube, J., Gyuk, G., Hakansson, N., Holder, J., Humensky, T. B., Johnson, C. A., Kaaret, P., Kertzman, M., Kieda, D., Krause, M., Krennrich, F., Lang, M. J., Lin, T. T. Y., Maier, G., McArthur, S., McCann, A., Meagher, K., Moriarty, P., Mukherjee, R., Nieto, D., OFaolain de Bhroithe, A., Ong, R. A., Park, N., Petry, D., Pohl, M., Popkow, A., Ragan, K., Ratliff, G., Reyes, L. C., Reynolds, P. T., Richards, G. T., Roache, E., Santander, M., Sembroski, G. H., Shahinyan, K., Staszak, D., Telezhinsky, I., Tucci, J. V., Tyler, J., Vassiliev, V. V., Wakely, S. P., Weiner, O. M., Weinstein, A., Wilhelm, A., Williams, D. A., Zitzer, B., Vince, O., Fuhrmann, L., Angelakis, E., Karamanavis, V., Myserlis, I., Krichbaum, T. P., Zensus, J. A., Ungerechts, H., Sievers, A., Bachev, R., Bottcher, M., Chen, W. P., Damljanovic, G., Eswaraiah, C., Guver, T., Hovatta, T., Hughes, Z., Ibryamov, S. I., Joner, M. D., Jordan, B., Jorstad, S. G., Joshi, M., Kataoka, J., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Latev, G., Lin, H. C., Larionov, V. M., Mokrushina, A. A., Morozova, D. A., Nikolashvili, M. G., Raiteri, C. M., Ramakrishnan, V., Readhead, A. C. R., Sadun, A. C., Sigua, L. A., Semkov, E. H., Strigachev, A., Tammi, J., Tornikoski, M., Troitskaya, Y. V., Troitsky, I. S., Villata, M., First NuSTAR observations of Mrk 501 within a radio to TeV multi-instrument campaign, 2015, Astrophysical Journal, vol. 812, issue 1, id. 65, 22 pp. (ISSN: 0004-637X, eISSN: 1538-4357, IF(2015)=5.909, Q1, Web of Science, Scopus, https://doi.org/10.1088/0004-637X/812/1/65)
    2015 Thuillot, W., Bancelin, D., Ivantsov, A., Desmars, J., Assafin, M., Eggl, S., Hestroffer, D., Rocher, P., Carry, B., David, P., Abe, L., Andreev, M., Arlot, J.-E., Asami, A., Ayvasian, V., Baransky, A., Belcheva, M., Bendjoya, Ph., Bikmaev, I., Burkhonov, O. A., Camci, U., Carbognani, A., Colas, F., Devyatkin, A. V., Ehgamberdiev, Sh. A., Enikova, P., Eyer, L., Galeev, A., Gerlach, E., Godunova, V., Golubaev, A. V., Gorshanov, D. L., Gumerov, R., Hashimoto, N., Helvaci, M., Ibryamov, S., Inasaridze, R. Ya., Khamitov, I., Kostov, A., Kozhukhov, A. M., Kozyryev, Y., Krugly, Yu. N., Kryuchkovskiy, V., Kulichenko, N., Maigurova, N., Manilla-Robles, A., Martyusheva, A. A., Molotov, I. E., Nikolov, G., Nikolov, P., Nishiyama, K., Okumura, S., Palaversa, L., Parmonov, O., Peng, Q. Y., Petrova, S. N., Pinigin, G. I., Pomazan, A., Rivet, J.-P., Sakamoto, T., Sakhibullin, N., Sergeev, O., Sergeyev, A. V., Shulga, O. V., Suarez, O., Sybiryakova, Y., Takahashi, N., Tarady, V., Todd, M., Urakawa, S., Uysal, O., Vaduvescu, O., Vovk, V., Zhang, X.-L., The astrometric Gaia-FUN-SSO observation campaign of 99942 Apophis, 2015, Astronomy & Astrophysics vol. 583, id. A59, 12 pp. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2015)=5.185, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/201425603)
    2015 Raiteri, C. M., Stamerra, A., Villata, M., Larionov, V. M., Acosta-Pulido, J. A., Arevalo, M. J., Arkharov, A. A., Bachev, R., Benitez, E., Bozhilov, V. V., Borman, G. A., Buemi, C. S., Calcidese, P., Carnerero, M. I., Carosati, D., Chigladze, R. A., Damljanovic, G., Di Paola, A., Doroshenko, V. T., Efimova, N. V., Ehgamberdiev, Sh. A., Giroletti, M., Gonzalez-Morales, P. A., Grinon-Marin, A. B., Grishina, T. S., Hiriart, D., Ibryamov, S., Klimanov, S. A., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Kurtenkov, A. A., Larionova, L. V., Larionova, E. G., Lazaro, C., Lahteenmaki, A., Leto, P., Markovic, G., Mirzaqulov, D. O., Mokrushina, A. A., Morozova, D. A., Mujica, R., Nazarov, S. V., Nikolashvili, M. G., Ohlert, J. M., Ovcharov, E. P., Paiano, S., Pastor Yabar, A., Prandini, E., Ramakrishnan, V., Sadun, A. C., Semkov, E., Sigua, L. A., Strigachev, A., Tammi, J., Tornikoski, M., Trigilio, C., Troitskaya, Yu. V., Troitsky, I. S., Umana, G., Velasco, S., Vince, O., The WEBT campaign on the BL Lac object PG 1553-113 in 2013. An analysis of the enigmatic synchrotron emission, 2015, Monthly Notices of the Royal Astronomical Society, vol. 454, issue 1, p. 353-367 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2015)=4.952, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stv1884)
    2015 Kjurkchieva, D., Khruzina, T., Dimitrov, D., Groebel, R., Ibryamov, S., Nikolov, G., 2MASS J22560844+5954299: the newly discovered cataclysmic star with the deepest eclipse, 2015, Astronomy & Astrophysics, vol. 584, id. A40, 12 pp. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2015)=5.185, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/201526102)
    2014 Bachev, R., Strigachev, A., Semkov, E., Boeva, S., Peneva, S., Ibryamov, S., Stoyanov, K., Spassov, B., Tsvetkova, S., Mihov, B., Latev, G., Dimitrov, D., Photometric reverberation mapping of Markarian 279, 2014, Bulgarian Astronomical Journal, vol. 20, p. 26-30 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science, Scopus)
    2014 Semkov, E. H., Peneva, S. P., Ibryamov, S. I., Dimitrov, D. P., The unusual photometric behavior of the new FUor star V2493 Cyg (HBC 722), 2014, Bulgarian Astronomical Journal, vol. 20, p. 59-67 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science, Scopus)
    2014 Kjurkchieva, D., Dimitrov, D., Ibryamov, S., Atanasova, T., Photometric study of the short-period eclipsing star ROTSE1 J171630.99+433832.1, 2014, Bulgarian Astronomical Journal, vol. 21, p. 15-18 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science, Scopus)
    2014 Poljancic Beljan, I., Jurdana-Sepic, R., Semkov, E. H., Ibryamov, S., Peneva, S. P., Tsvetkov, M. K., Long-term photometric observations of pre-main sequence objects in the field of North America/Pelican Nebula, 2014, Astronomy & Astrophysics, vol. 568, id. A49, 30 pp. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2014)=4.378, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/201322965)
    2014 Kjurkchieva, D. P., Dimitrov, D. P., Ibryamov, S. I., ASAS 000709+2621.5 is an overcontact eclipsing binary, not a delta Sct variable, 2014, Information Bulletin on Variable Stars, no. 6113, 4 pp. (ISSN: 0374-0676, eISSN: 1587-2440, SJR(2014)=0.115, Q4, Scopus)
    2014 Ibryamov, S., Semkov, E., Peneva, S., A long-term UBVRI photometric study of the pre-main sequence star V350 Cep, 2014, Research in Astronomy and Astrophysics, vol. 14, issue 10, p. 1264-1268 (ISSN: 1674-4527, eISSN: 2397-6209, IF(2014)=1.640, Q2 в метриката SJR, Web of Science, Scopus, https://doi.org/10.1088/1674-4527/14/10/005)
    2013 Kjurkchieva, D. P., Dimitrov, D. P., Ibryamov, S. I., Srinivasa Rao, M., GSC 2701-2527, a new multiperiodic high-amplitude Delta Scuti variable, 2013, Bulletin of the Astronomical Society of India, vol. 41, no. 2, p. 173-182 (ISSN: 0304-9523, eISSN: 2249-9601, IF=2.455, Q2, Web of Science, Scopus)
    2013 Semkov, E., Bachev, R., Strigachev, A., Ibryamov, S., Peneva, S., Gupta, A. C., Recent optical activity of Mrk 421, 2013, Astronomers Telegram, no. 4982 (ISSN: 1920-406X, SAO/NASA Astrophysics Data System)
    2013 Semkov, E. H., Peneva, S. P., Munari, U., Dennefeld, M., Mito, H., Dimitrov, D. P., Ibryamov, S., Stoyanov, K. A., Photometric and spectroscopic variability of the FUor star V582 Aurigae, 2013, Astronomy & Astrophysics, vol. 556, id. A60, 9 pp. (ISSN: 0004-6361, eISSN: 1432-0746, IF(2013)=4.479, Q1, Web of Science, Scopus, https://doi.org/10.1051/0004-6361/201321732)
    2013 Raiteri, C. M., Villata, M., DAmmando, F., Larionov, V. M., Gurwell, M. A., Mirzaqulov, D. O., Smith, P. S., Acosta-Pulido, J. A., Agudo, I., Arevalo, M. J., Bachev, R., Benitez, E., Berdyugin, A., Blinov, D. A., Borman, G. A., Bottcher, M., Bozhilov, V., Carnerero, M. I., Carosati, D., Casadio, C., Chen, W. P., Doroshenko, V. T., Efimov, Yu. S., Efimova, N. V., Ehgamberdiev, Sh. A., Gomez, J. L., Gonzalez-Morales, P. A., Hiriart, D., Ibryamov, S., Jadhav, Y., Jorstad, S. G., Joshi, M., Kadenius, V., Klimanov, S. A., Kohli, M., Konstantinova, T. S., Kopatskaya, E. N., Koptelova, E., Kimeridze, G., Kurtanidze, O. M., Larionova, E. G., Larionova, L. V., Ligustri, R., Lindfors, E., Marscher, A. P., McBreen, B., McHardy, I. M., Metodieva, Y., Molina, S. N., Morozova, D. A., Nazarov, S. V., Nikolashvili, M. G., Nilsson, K., Okhmat, D. N., Ovcharov, E., Panwar, N., Pasanen, M., Peneva, S., Phipps, J., Pulatova, N. G., Reinthal, R., Ros, J. A., Sadun, A. C., Schwartz, R. D., Semkov, E., Sergeev, S. G., Sigua, L. A., Sillanpaa, A., Smith, N., Stoyanov, K., Strigachev, A., Takalo, L. O., Taylor, B., Thum, C., Troitsky, I. S., Valcheva, A., Wehrle, A. E., Wiesemeyer, H., The awakening of BL Lacertae: observations by Fermi, Swift and the GASP-WEBT, 2013, Monthly Notices of the Royal Astronomical Society, vol. 436, issue 2, p. 1530-1545 (ISSN: 0035-8711, eISSN: 1365-2966, IF(2013)=5.226, Q1, Web of Science, Scopus, https://doi.org/10.1093/mnras/stt1672)
    2012 Bachev, R., Spassov, B., Ibryamov, S., Boeva, S., Stoyanov, K., Semkov, E., Peneva, S., Strigachev, A., No evidence for enhanced optical emission from BL Lacertae, 2012, Astronomers Telegram, no. 4568 (ISSN: 1920-406X, SAO/NASA Astrophysics Data System)
    2011 Ibryamov, S., The International Year of Astronomy 2009 in Shumen - realized initiatives, 2011, Bulgarian Astronomical Journal, vol. 15, p. 117-122 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science)
    2011 Radeva, V., Dimitrov, D., Kjurkchieva, D., Ibryamov, S., Rotation periods of the asteroids 55 Pandora, 78 Diana and 815 Coppelia, 2011, Bulgarian Astronomical Journal, vol. 17, p. 133-141 (ISSN: 1313-2709, eISSN: 1314-5592, SAO/NASA Astrophysics Data System)
    2011 Radeva, V., Ibryamov, S., Tracking and discovering asteroids, 2011, Bulgarian Astronomical Journal, vol. 17, p. 142-151 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science)
    2011 Ibryamov, S., The Student Astronomical Society of the Shumen University: establishment, goals and activities, 2011, Bulgarian Astronomical Journal, vol. 17, p. 163-169 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science)
    2010 Kjurkchieva, D., Dimitrov, D., Ibryamov, S., BVR photometry of the star TU UMi, 2010, Bulgarian Astronomical Journal, vol. 14, p. 65-70 (ISSN: 1313-2709, eISSN: 1314-5592, Web of Science)
    2018 E. H. Semkov, S. P. Peneva, S. I. Ibryamov, A. S. Mutafov, "The role of episodic mass accretion in stellar and planetary formation", European Week of Astronomy and Space Science, 3-6.04.2018, Liverpool, England
    2018 A. Mutafov, E. Semkov, S. Ibryamov, S. Peneva, "Long-time Photometric Study of UX Orionis Stars", 10th Jubilee Conference of the Balkan Physical Union, 26-30.08.2018, Sofia, Bulgaria
    2018 Цв. Георгиев, Р. Заманов, С. Боева, Г. Латев, Х. Марти, Г. Николов, С. Ибрямов, С. Цветкова, К. Стоянов, "Фрактален анализ на фликеринга на повторната нова RS Ophiuhi", XIII Национална научна конференция на САБ, 6-8.09.2018 г., гр. Варна
    2018 Д. Кюркчиева, С. Ибрямов, Б. Борисов, Д. Марчев, "Първи наблюдения с 25 см телескоп на Шуменската Астрономическа обсерватория", XIII Национална научна конференция на САБ, 6-8.09.2018 г., гр. Варна
    2018 A. Mutafov, E. Semkov, S. Peneva, S. Ibryamov, "Photometric monitoring of UX Ori type stars GM Cep and V1180 Cas", XI Bulgarian-Serbian Astronomical Conference, 14-18.05.2018, Belogradchik, Bulgaria
    2018 S. Ibryamov, E. Semkov, T. Milanov, S. Peneva, "Long-term photometric BVRI light curves of 15 PMS stars in the Pelican Nebula (IC 5070)", XI Bulgarian-Serbian Astronomical Conference, 14-18.05.2018, Belogradchik, Bulgaria
    2018 Ts. Georgiev, S. Boeva, S. Ibryamov, G. Latev, J. Marti, G. Nikolov, B. Spassov, K. Stoyanov, S. Tsvetkova, R. Zamanov, "Statistical analysis of the short-term variability of the recurrent nova RS Ophiuchi", XI Bulgarian-Serbian Astronomical Conference, 14-18.05.2018, Belogradchik, Bulgaria
    2018 Evgeni Semkov, Stoyanka Peneva, Sunay Ibryamov, Ulisse Munari, Hiroyuki Mito, "Long-term photometric monitoring of FUor and FUor-like objects", Instability Phenomena and Evolution of the Universe, 17-21.09.2018, Byurakan, Armenia
    2018 Т. Миланов, С. Ибрямов, Е. Семков, "Многоцветна фотометрия на млади звезди в мъглявината Пеликан", VI Национална студентска научна конференция с участие на ученици, 04-05.05.2018 г., гр. Шумен
    2018 Д. Кюркчиева, Д. Марчев, Б. Борисов, С. Ибрямов, Д. Димитров, В. Попов, Е. Иванов, „Дистанционно управление на 40-см телескоп Meade LX200ACF”, XI Bulgarian-Serbian Astronomical Conference, 14-18.05.2018, Belogradchik, Bulgaria
    2017 E. Semkov, S. Peneva, S. Ibryamov, "Long-Term Optical Light Curves of Pre-Main Sequence Objects", European Week of Astronomy and Space Science, 26-30.06.2017, Prague, Czech Republic
    2017 Evgeni H. Semkov, Sunay I. Ibryamov, Stoyanka P. Peneva, "Long-term photometric observations in field of the star formation region NGC7129", IAU Symposium 336 - Astrophysical Masers: Unlocking the Mysteries of the Universe, 04-08.09.2017, Cagliari, Italy (Poster)
    2017 С. Ибрямов, В. Радева, Т. Миланов, Б. Димов, П. Василев, М. Пенчев, С. Василева, В. Чобанова, Д. Димитрова, З. Денев, "Резултати от участието на студенти от Шуменския университет в кампаниите за търсене на астероиди, организирани от IASC в периода 2016-2017 г.", IV НСНК "От атома до Космоса", 12-13.05.2017 г., Шумен (постерен доклад)
    2017 Teodor Milanov, Sunay Ibryamov, "Long-term BVRI photometry of the pre-main sequence star V982 Cep", Young Researchers in Sciences, 14-19.08.2017, Cluj-Napoca, Romania
    2017 Evgeni Semkov, Sunay Ibryamov, Stoyanka Peneva, Asen Mutafov, "Long-term optical photometric monitoring in the star formation regions", Stellar Associations: 70 Years of Research, 25-27.09.2017, Byurakan, Armenia
    2017 С. Ибрямов, "Многоцветно фотометрично поведение на избрани звезди преди Главната последователност на диаграмата на Херцшпрунг-Ръсел", XV Национална конференция с международно участие "Природни науки 2017", 29.09-01.10.2017 г., Варна (публична академична лекция)
    2017 С. Ибрямов, Е. Семков, С. Пенева, "Дългосрочно BVRI фотометрично поведение на звездата преди ГП V1704 Cygni", XII Национална научна конференция на САБ, 05–08.10.2017 г., Ивайловград (постерен доклад)
    2017 С. Боева, Г. Латев, С. Ибрямов, Е. Семков, С. Пенева, Б. Спасов, Б. Петров, С. Цветкова, К. Стоянов, Я. Николов, Г. Николов, "Многоцветна крива на блясъка на V751 Cyg в периода 2005-2017 г.", XII Национална научна конференция на САБ, 05–08.10.2017 г., Ивайловград
    2017 E. Semkov, S. Ibryamov, S. Peneva, "Long-term photometric observations in field of the star formation region", XII Национална научна конференция на САБ, 05–08.10.2017 г., Ивайловград (постерен доклад)
    2017 С. Ибрямов, "Фотометрично изследване на 4 звезди от типа UX Orionis", конференция "120 години Астрономическа обсерватория на Софийския университет", 11-12.11.2017 г., София
    2016 S. Ibryamov, E. Semkov, "Multicolour photometric study of T Tauri variables", X Serbian-Bulgarian Astronomical Conference, 30 May-03 June, 2016, Belgrade, Serbia (Poster)
    2016 Д. Кюркчиева, С. Кунев, Др. Марчев, Б. Борисов, С. Ибрямов, Хр. Христов, А. Милев, Д. Димитров, Н. Петров, В. Попов, В. Радева, Д. Василева, Т. Атанасова, Е. Иванов, "Новата астрономическа обсерватория на Шуменския университет", X Serbian-Bulgarian Astronomical Conference, 30 май-03 юни 2016 г., Белград, Сърбия (постер)
    2016 S. Ibryamov, E. Semkov, "Long-term UBVRI photometry of the PMS star V350 Cep", X Serbian-Bulgarian Astronomical Conference, 30 May-03 June, 2016, Belgrade, Serbia (Poster)
    2016 Д. Кюркчиева, С. Кунев, Др. Марчев, Б. Борисов, С. Ибрямов, Хр. Христов, А. Милев, Д. Димитров, Н. Петров, В. Попов, В. Радева, Д. Василева, Т. Атанасова, Е. Иванов, "Новата астрономическа обсерватория на Шуменския университет", XI Национална научна конференция на САБ, 14–16.07.2016 г., Кърджали (постерен доклад)
    2016 E. Semkov, S. Peneva, S. Ibryamov, "Optical light curves of FUor and FUor-like objects", XI Национална научна конференция на САБ, 14–16.07.2016 г., Кърджали (постерен доклад)
    2016 С. Ибрямов, Е. Семков, Т. Миланов, С. Пенева, "Фотометрично изследване на променливи звезди от типа UX Orionis", XI Национална научна конференция на САБ, 14–16.07.2016 г., Кърджали (постерен доклад)
    2016 С. Ибрямов, Е. Семков, "Многоцветно фотометрично изследване на T Tauri променливи", XI Национална научна конференция на САБ, 14–16.07.2016 г., Кърджали (постерен доклад)
    2016 E. Semkov, S. Peneva, S. Ibryamov, "Optical light curves of FUor and FUor-like objects", IAU Symposium 325 - Astroinformatics, 20-24.10.2016, Sorrento, Italy (Poster)
    2016 D. Pienkowski, C. Galan, T. Tomov, P. Wychudzki, M. Mikolajewski, ..., S. Ibryamov, ... et al., "EE Cep eclipse in 2014 - an international observational campaign", Lorentz Center Workshop Rocks, Rubble and Rings: Understanding Deep and Irregular Transits, 26-30.09.2016, Leiden, Netherlands (Poster)
    2016 E. Semkov, S. Peneva, S. Ibryamov, U. Munari, H. Mito, "Optical light curves of FUor and FUor-like objects", European Week of Astronomy and Space Science, 04-08.07.2016, Athens, Greece (Poster)
    2016 Д. Владев, Б. Стоянов, Е. Стоянов, Д. Кюркчиева, С. Ибрямов, "Срутищни процеси в района на пещерата "Нимфите" (Мадарско плато)", V Международна конференция "Географски науки и образование", 04-05.11.2016 г., Шумен
    2015 Е. Семков, С. Пенева, С. Ибрямов „Как да различим избухванията от затъмненията при младите звезди?”, X Национална научна конференция на САБ, 2–5.07.2015 г., Белоградчик (доклад)
    2015 С. Ибрямов, „Астероиди с български имена", X Национална научна конференция на САБ, 2–5.07.2015 г., Белоградчик (постер)
    2015 S. Ibryamov, E. Semkov, S. Peneva, "Long-Term Multicolour Photometry of Young Stellar Objects in the field of Gulf of Mexico (NGC 7000/IC 5070)", X Национална научна конференция на САБ, 2-5.07.2015 г., Белоградчик (постер)
    2014 E. Semkov, S. Peneva, S. Ibryamov, "The long-term optical evolution of FUor and FUor-like objects", The Olympian Symposium on Star Formation, May 26–30, 2014, Paralia Katerini, Greece (Poster)
    2014 S. Ibryamov, E. Semkov, S. Peneva, "Long-term photometric observations of pre-main sequence stars in the “Gulf of Mexico”, The Olympian Symposium on Star Formation, May 26–30, 2014, Paralia Katerini, Greece (Poster)
    2014 С. Ибрямов, Е. Семков, С. Пенева, „Дългопериодични фотометрични наблюдения на звезди преди Главната последователност в областта NGC7000/IC5070 (Мексикански залив)”, IX Национална научна конференция на САБ, 16–18.05.2014 г., Шумен (устен доклад)
    2014 S. Ibryamov, E. Semkov, S. Peneva, „A long-term UBVRI photometric study of the pre-main sequence star V350 Cep”, IX Национална научна конференция на САБ, 16–18.05.2014 г., Шумен (постерен доклад)
    2014 D. Kjurkchieva, D. Dimitrov, S. Ibryamov, „ASAS 212824+1517.4: a high-amplitude Delta Scuti variable”, IX Национална научна конференция на САБ, 16–18.05.2014 г., Шумен (постерен доклад)
    2014 Г. Латев, С. Боева, Р. Заманов, ..., С. Ибрямов, "Търсене на периодичности във фотометричното поведение на катаклизмичната променлива AE Aquarii", IX Национална научна конференция на САБ, 16–18.05.2014 г., Шумен (устен доклад)
    2013 V. Ivanov, S. Ibryamov, “Light curve solutions of 100 eclipsing binaries with circular and near-circular orbits in the Small Magellanic Cloud”, VIII Национална научна конференция на САБ, 10–11.05.2013 г., Варна (постерен доклад)
    2011 В. Радева, Д. Димитров, Д. Кюркчиева, С. Ибрямов, „Криви на блясъка на късопериодични астероиди", VI Национална научна конференция на САБ, 13–15.05.2011 г., Стара Загора (постерен доклад)
    2011 В. Радева, С. Ибрямов, "Проследяване и откриване на астероиди", VI Национална научна конференция на САБ, 13–15.05.2011 г., Стара Загора (постерен доклад)
    2011 С. Ибрямов, „Студентското астрономическо общество в Шуменския университет – учредяване, цели и дейности", VI Национална научна конференция на САБ, 13–15.05.2011 г., Стара Загора (постерен доклад)
    2011 Д. Димитров, Д. Кюркчиева, С. Ибрямов, „Крива на блясъка на пулсиращата delta Sct звезда NSVS 6290107", VI Национална научна конференция на САБ, 13–15.05.2011 г., Стара Загора (постерен доклад)
    2010 В. Иванов, Д. Кюркчиева, С. Ибрямов, „Решаване на криви на блясъка на затъмнително-двойни звезди в Малкия Магеланов Облак. IV.”, V Национална научна конференция с международно участие на САБ, 10–12.05.2010 г., Шумен (постерен доклад)
    2010 С. Ибрямов, „Международната година на астрономията 2009 в Шумен – реализирани инициативи”, V Национална научна конференция с международно участие на САБ, 10–12.05.2010 г., Шумен (постерен доклад)
    2022 Справката за забелязаните независими цитирания (без автоцитирания и цитирания от съавтори) е качена в страницата „Файлове“.