Zobrazeno 1 - 10
of 849
pro vyhledávání: '"Popovic L"'
Autor:
Britzen, S., Kovačević, A. B., Zajaček, M., Popović, L. Č., Pashchenko, I. N., Kun, E., Pánis, R., Jaron, F., Plšek, T., Tursunov, A., Stuchlík, Z.
The BL Lac Object PKS 1717+177 has been identified as potential neutrino-emitting AGN in the point source stacking analysis of IceCube data. We explore peculiarities in the morphology and kinematics of the jet and examine multi-wavelength light curve
Externí odkaz:
http://arxiv.org/abs/2410.18184
Autor:
Komossa, S., Grupe, D., Marziani, P., Popovic, L. C., Marceta-Mandic, S., Bon, E., Ilic, D., Kovacevic, A. B., Kraus, A., Haiman, Z., Petrecca, V., De Cicco, D., Dimitrijevic, M. S., Sreckovic, V. A., Dojcinovic, J. Kovacevic, Pannikkote, M., Bon, N., Gupta, K. K., Iacob, F.
The extremes of Active Galactic Nuclei (AGN) variability offer valuable new insights into the drivers and physics of AGN. We discuss some of the most extreme cases of AGN variability; the highest amplitudes, deep minima states, extreme spectral state
Externí odkaz:
http://arxiv.org/abs/2408.00089
In this paper, we study and compare the optical and X-ray counterparts of subparsec supermassive black hole binaries (SMBHBs). With that aim, we simulated the profiles of optical spectral lines emitted from the broad line region (BLR) as well as X-ra
Externí odkaz:
http://arxiv.org/abs/2407.18871
Autor:
Agostinetto, E., Bruzzone, M., Hamy, A.-S., Kim, H.J., Chiodi, C., Bernstein-Molho, R., Linn, S., Pogoda, K., Carrasco, E., Derouane, F., Bajpai, J., Nader-Marta, G., Lopetegui-Lia, N., Partridge, A.H., Cortesi, L., Rousset-Jablonski, C., Giugliano, F., Renaud, T., Ferrari, A., Paluch-Shimon, S., Fruscio, R., Cui, W., Wong, S.M., Vernieri, C., Ruddy, K.J., Dieci, M.V., Matikas, A., Rozenblit, M., Aguilar y Mendez, D., De Marchis, L., Borea, R., Puglisi, F., Pistelli, M., Kufel-Grabowska, J., Di Rocco, R., Mariamidze, E., Atzori, F., Kourie, H.R., Popovic, L., de Azambuja, E., Blondeaux, E., Lambertini, M.
Publikováno v:
In ESMO Open October 2024 9(10)
We discuss the polarization of broad emission lines in the type 1 active galactic nuclei (AGNs). The polarization depends on the geometry of the broad line region (BLR), and also on the polarization mechanism, or distribution of the scattering materi
Externí odkaz:
http://arxiv.org/abs/2111.06237
The perfect case for time-domain investigations are active galactic nuclei (AGNs) since they are luminous objects that show strong variability. Key result from the studies of AGNs variability is the estimated mass of a supermassive black hole (SMBH),
Externí odkaz:
http://arxiv.org/abs/2105.01515
Publikováno v:
A&A 647, A98 (2021)
We present new spectroscopic and polarimetric observations of the first discovered gravitational lens Q0957+561 obtained with the 6m telescope of the Special Astrophysical Observatory (SAO, Russia). We explore spectropolarimetric parameters of Q0957+
Externí odkaz:
http://arxiv.org/abs/2101.07154
Autor:
Ilic, D., Oknyansky, V., Popovic, L. C., Tsygankov, S. S., Belinski, A. A., Tatarnikov, A. M., Dodin, A. V., Shatsky, N. I., Ikonnikova, N. P., Rakic, N., Kovacevic, A., Marceta-Mandic, S., Burlak, M. A., Mishin, E. O., Metlova, N. V., Potanin, S. A., Zheltoukhov, S. G.
Publikováno v:
A&A 638, A13 (2020)
We present observations from the short-term intensive optical campaign (from Sep2019 to Jan2020) of the changing-look Seyfert NGC 3516. This active galactic nucleus is known to have strong optical variability and has changed its type in the past. It
Externí odkaz:
http://arxiv.org/abs/2004.01308
Here we give an observational method for measurements of the equatorial scattering region radius using variability in the polarized broad lines in Type 1 active galactic nuclei (AGNs). The polarization in broad lines of Type 1 AGNs is mostly caused b
Externí odkaz:
http://arxiv.org/abs/2003.12809
Autor:
Patiño-Ávarez, V. M., Torrealba, J., Chavushyan, V., Cruz-González, I., Arshakian, T., León-Tavares, J., Popović, L. Č.
Publikováno v:
Front. Astron. Space Sci. (FrASS) 3:19 (2016)
We study the Baldwin Effect (BE) in 96 core-jet blazars with optical and ultraviolet spectroscopic data from a radio-loud AGN sample obtained from the MOJAVE 2 cm survey. A statistical analysis is presented of the equivalent widths ($W_{\lambda}$) of
Externí odkaz:
http://arxiv.org/abs/2001.08784