To be or not to be a blazar. The case of the Narrow-Line Seyfert 1 SBS 0846+513

Дата и время публикации : 2012-10-01T20:01:17Z

Авторы публикации и институты :
F. D’Ammando (Dip. di Fisica, Università degli Studi di Perugia and INFN)
M. Orienti (Dip. di Astronomia, Università di Bologna and INAF-IRA)
J. Finke (U.S. Naval Research Laboratory)
on behalf of the Fermi-LAT Collaboration

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 4 pages, 2 figures. Proceedings of the “5th International Symposium on High-Energy Gamma-Ray Astronomy”, Heidelberg (Germany), 9-13 July 2012
Первичная категория: astro-ph.HE

Все категории : astro-ph.HE, astro-ph.CO

Краткий обзор статьи: The presence of a relativistic jet in some radio-loud Narrow-Line Seyfert 1s (NLSy1) galaxies, first suggested by their variable radio emission and the flat radio spectra, is now confirmed by the Fermi-LAT detection of five NLSy1s in gamma rays. In particular, a strong gamma-ray flare from SBS 0846+513 was observed in 2011 June by Fermi-LAT reaching a gamma-ray luminosity (0.1-300 GeV) of about 10^48 erg/s, comparable to that of bright flat spectrum radio quasars. Apparent superluminal velocity in the jet was inferred from 2011-2012 VLBA images, suggesting the presence of a highly relativistic jet. Both the power released by this object during the flaring activity and the apparent superluminal velocity are strong indicators of the presence of a relativistic jet as powerful as those in blazars. In addition, variability and spectral properties in radio and gamma-ray bands indicate a blazar-like behaviour, suggesting that, except for some distinct optical characteristics, SBS 0846+513 could be considered as a young blazar at the low end of the blazar’s black hole mass distribution.

Category: Physics