Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Saša Simić"'
Autor:
Dragana Ilić, Luka Č. Popović, Alexander Burenkov, Elena Shablovinskaya, Eugene Malygin, Roman Uklein, Alexei V. Moiseev, Dmitry Oparin, Víctor M. Patiño Álvarez, Vahram Chavushyan, Paola Marziani, Mauro D’Onofrio, Alberto Floris, Andjelka B. Kovačević, Jovana Jovičić, Djordje Miković, Nemanja Rakić, Saša Simić, Sladjana Marčeta Mandić, Stefano Ciroi, Amelia Vietri, Luca Crepaldi, Ascensión del Olmo
Publikováno v:
Physics, Vol 6, Iss 1, Pp 31-45 (2023)
Properties of the broad line region (BLR) in active galactic nuclei (AGNs) are commonly used to estimate the mass of the supermassive black hole (SMBH) that powers an AGN. However, the understanding of the physics behind the BLR remains incomplete. T
Externí odkaz:
https://doaj.org/article/4dbd3537da644f71b4f6456bd97b2b91
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 505:5192-5211
Here we consider the perspective to detect sub-pc super-massive binary black-hole (SMBBH) systems using long-term photometric and spectroscopic monitoring campaigns of active galactic nuclei. This work explores the nature of long-term spectral variab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9188a76beec7e22746249d2b5560c1ab
https://doi.org/10.1093/mnras/stab1510
https://doi.org/10.1093/mnras/stab1510
Publikováno v:
Astronomische Nachrichten. 343
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fb74d46bfa2bf930806b2a5f396effc
https://doi.org/10.1002/asna.20210088
https://doi.org/10.1002/asna.20210088
Publikováno v:
Astronomische Nachrichten. 343
We investigate the broad line profiles emitted from a system supermassive binary black hole (SMBBH) having elliptical orbits and low mass ratio of $m_2/m_1\sim 0.1$. Our model assumes a super Eddington accretion flow in the case of a smaller componen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a53a59539787ab11184b1978b8710257
https://doi.org/10.1002/asna.20210073
https://doi.org/10.1002/asna.20210073
Autor:
Andjelka B. Kovačević, Viktor Radović, Dragana Ilić, Luka Č. Popović, Roberto J. Assef, Paula Sánchez-Sáez, Robert Nikutta, Claudia M. Raiteri, Ilsang Yoon, Yasaman Homayouni, Yan-Rong Li, Neven Caplar, Bozena Czerny, Swayamtrupta Panda, Claudio Ricci, Isidora Jankov, Hermine Landt, Christian Wolf, Jelena Kovačević-Dojčinović, Maša Lakićević, Đorđe V. Savić, Oliver Vince, Saša Simić, Iva Čvorović-Hajdinjak, Sladjana Marčeta-Mandić
Publikováno v:
The Astrophysical Journal Supplement Series. 262:49
The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will detect an unprecedentedly large sample of actively accreting supermassive black holes with typical accretion disk (AD) sizes of a few light days. This brings us to face challen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7cd31fc6a4f34697dd9fa75318f7274
https://doi.org/10.3847/1538-4365/ac88ce
https://doi.org/10.3847/1538-4365/ac88ce
The photometric light curve of PG1302-102 shows periodic variability which makes this object one of the most plausible supermassive black hole binary candidate. Interestingly, the most recent study of its updated optical light curve reports a decreas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2af94faf7f85e15bae0b4153f86f0ab1
http://arxiv.org/abs/1812.03370
http://arxiv.org/abs/1812.03370
Autor:
Evencio Mediavilla, Alexei Moiseev, A. A. Smirnova, C. Fian, Luka Č. Popović, Saša Simić, Dj. Savić, V. L. Afanasiev
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 634, pp.A27. ⟨10.1051/0004-6361/201936088⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 634, pp.A27. ⟨10.1051/0004-6361/201936088⟩
We present new spectroscopic and polarimetric observations of the gravitational lens SDSS J1004+4112 taken with the 6m telescope of the Special Astrophysical Observatory (SAO, Russia). In order to explain the variability that is observed only in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5dcdab16f336d4d6cb9064adab84095
https://doi.org/10.1051/0004-6361/201936088
https://doi.org/10.1051/0004-6361/201936088
In this paper, we study the possibility of detection of short term terrestrial lower ionospheric response to gamma ray bursts (GRBs) using a statistical analysis of perturbations of six very low or low frequency (VLF/LF) radio signals emitted by tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48a1cdc68a2bb4e7131114189206e3fc
http://arxiv.org/abs/1801.10153
http://arxiv.org/abs/1801.10153
Publikováno v:
Astrophysics and Space Science. 361
Here we discuss the possibility of super-massive binary black hole (SMBBH) detection, using the shifts of the broad lines emitted from a binary system. We perform a number of simulations of shapes and shifts of $H_{\beta}$ lines emitted from SMBBHs,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::565053045f890232754527e241467938
https://doi.org/10.1007/s10509-015-2647-2
https://doi.org/10.1007/s10509-015-2647-2
Publikováno v:
Proceedings of the International Astronomical Union. 8:437-440
Enormous progress is being made in developing observational facilities. As a result, there are new opportunities to observe structures at sub-mas resolution. To explore gravitationally lensed systems, we simulate radio-lobe images distorted by microl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5350537d0c8e9f2a2370e75f294ec634
https://doi.org/10.1017/s1743921312021904
https://doi.org/10.1017/s1743921312021904