Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Sergeev, Sergey G"'
Autor:
Gorbachev, Mark A., Butuzova, Marina S., Sergeev, Sergey G., Nazarov, Sergey V., Zhovtan, Alexey V.
Publikováno v:
The Astrophysical Journal, Volume 928, Issue 1, id.86, 19 pp., 2022
Multiband optical photometry data of blazar S5 0716+714 obtained from 2002 to 2019 reveal stable color index change with flux variability. We analyzed this trend under variability caused by the Doppler factor change in the presence of a curved photon
Externí odkaz:
http://arxiv.org/abs/2201.09294
Autor:
Casadio, Carolina, Gómez, José L., Jorstad, Svetlana G., Marscher, Alan P., Larionov, Valeri M., Smith, Paul S., Gurwell, Mark A., Lähteenmäki, Anne, Agudo, Iván, Molina, Sol N., Bala, Vishal, Joshi, Manasvita, Taylor, Brian, Williamson, Karen E., Arkharov, Arkady A., Blinov, Dmitry A., Borman, George A., Di Paola, Andrea, Grishina, Tatiana S., Hagen-Thorn, Vladimir A., Itoh, Ryosuke, Kopatskaya, Evgenia N., Larionova, Elena G., Larionova, Liudmila V., Morozova, Daria A., Rastorgueva-Foi, Elizaveta, Sergeev, Sergey G., Tornikoski, Merja, Troitsky, Ivan S., Thum, Clemens, Wiesemeyer, Helmut
We perform a multi-wavelength polarimetric study of the quasar CTA 102 during an extraordinarily bright $\gamma$-ray outburst detected by the {\it Fermi} Large Area Telescope in September-October 2012 when the source reached a flux of F$_{>100~\mathr
Externí odkaz:
http://arxiv.org/abs/1508.07254
Autor:
Bhatta, Gopal, Goyal, Arti, Ostrowski, Michal, Stawarz, Łukasz, Arkharov, A. A., Akitaya, Hiroshi, Bachev, Rumen, Benítez, Erika, Borman, G. A., Carosati, Daniele, Cason, Andy, Damljanovic, Goran, Dhalla, Sarah, Frasca, Antonio, Hiriart, David, Hu, Shao Ming, Itoh, Ryosuke, Jableka, Damian, Jorstad, Svetlana, Kawabata, Koji, Klimanov, Sergey, Kurtanidze, Omar, Larionov, Valeri, Laurence, Douglas, Leto, Giuseppe, Markowitz, Alex, Marscher, Alan P., Moody, J., Moritani, Yuki, Ohlert, Johannes, Di Paola, Andrea, Raiteri, Claudia M., Rizzi, Nicola, Sadun, Alberto, Sasada, Mahito, Sergeev, Sergey G, Strigachev, Anton, Takaki, Katsutoshi, Troitsky, Ivan, Ui, Takahiro, Villata, Massimo, Vince, Oliver, Webb, James, Yoshida, Michitoshi, Zola, Staszek
The occurrence of low-amplitude flux variations in blazars on hourly timescales, commonly known as microvariability, is still a widely debated subject in high-energy astrophysics. Several competing scenarios have been proposed to explain such occurre
Externí odkaz:
http://arxiv.org/abs/1507.08424
We present new photometric observations of Supernova (SN) 2003ie starting one month before discovery, obtained serendipitously while observing its host galaxy. With only a weak upper limit derived on the mass of its progenitor (<25 M_sun) from pre-ex
Externí odkaz:
http://arxiv.org/abs/1210.7281
Autor:
Onken, Christopher A., Valluri, Monica, Peterson, Bradley M., Pogge, Richard W., Bentz, Misty C., Ferrarese, Laura, Vestergaard, Marianne, Crenshaw, D. Michael, Sergeev, Sergey G., McHardy, Ian M., Merritt, David, Bower, Gary A., Heckman, Timothy M., Wandel, Amri
We present a stellar dynamical estimate of the black hole (BH) mass in the Seyfert 1 galaxy, NGC 4151. We analyze ground-based spectroscopy as well as imaging data from the ground and space, and we construct 3-integral axisymmetric models in order to
Externí odkaz:
http://arxiv.org/abs/0708.1196
Autor:
Bentz, Misty C., Denney, Kelly D., Cackett, Edward M., Dietrich, Matthias, Fogel, Jeffrey K. J., Ghosh, Himel, Horne, Keith D., Kuehn, Charles, Minezaki, Takeo, Onken, Christopher A., Peterson, Bradley M., Pogge, Richard W., Pronik, Vladimir I., Richstone, Douglas O., Sergeev, Sergey G., Vestergaard, Marianne, Walker, Matthew G., Yoshii, Yuzuru
Publikováno v:
Astrophys.J.662:205-212,2007
We describe results from a new ground-based monitoring campaign on NGC 5548, the best studied reverberation-mapped AGN. We find that it was in the lowest luminosity state yet recorded during a monitoring program, namely L(5100) = 4.7 x 10^42 ergs s^-
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702644
Autor:
Denney, Kelly D., Bentz, Misty C., Peterson, Bradley M., Pogge, Richard W., Cackett, Edward M., Dietrich, Matthias, Fogel, Jeffrey K. J., Ghosh, Himel, Horne, Keith, Kuehn, Charles, Minezaki, Takeo, Onken, Christopher A., Pronik, Vladimir I., Richstone, Douglas O., Sergeev, Sergey G., Vestergaard, Marianne, Walker, Matthew G., Yoshii, Yuzuru
Publikováno v:
Astrophys.J.653:152-158,2006
We present new observations leading to an improved black hole mass estimate for the Seyfert 1 galaxy NGC 4593 as part of a reverberation-mapping campaign conducted at the MDM Observatory. Cross-correlation analysis of the H_beta emission-line light c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608406
Autor:
Bentz, Misty C., Denney, Kelly D., Cackett, Edward M., Dietrich, Matthias, Fogel, Jeffrey K. J., Ghosh, Himel, Horne, Keith, Kuehn, Charles, Minezaki, Takeo, Onken, Christopher A., Peterson, Bradley M., Pogge, Richard W., Pronik, Vladimir I., Richstone, Douglas O., Sergeev, Sergey G., Vestergaard, Marianne, Walker, Matthew G., Yoshii, Yuzuru
Publikováno v:
Astrophys.J.651:775-781,2006
We have undertaken a new ground-based monitoring campaign to improve the estimates of the mass of the central black hole in NGC 4151. We measure the lag time of the broad H beta line response compared to the optical continuum at 5100 A and find a lag
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607085
Autor:
Naumov, Sergey Yuri, Fomin, Oleg, Babchak, Vladimir, Barzano', Alberto, Gerasimova, Valentina V., Zakhariev, Zakhari, Poliakov, Vladimir M., Sergeev, Sergey G.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2601::844c4d543f3dbd0346379bc13649368d
http://hdl.handle.net/10807/38120
http://hdl.handle.net/10807/38120
Akademický článek
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