Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-12
Astrophys.J.662:878-883,2007
Astronomy and Astrophysics
Astrophysics
7 pages, 3 figures, accepted for publication in ApJ
Scientific paper
10.1086/518024
We present the first X-ray observations of three sources belonging to a new AGN class: the naked AGNs. Based on optical spectroscopic studies, these sources appear as classical type 2 (obscured) AGNs, with only narrow emission lines. However, long-term optical monitoring campaigns, carried out over more than two decades, show that the same sources are strongly variable, like type 1 (un-obscured) AGNs. Based on short Chandra observations, the sources appear to be fairly bright in the X-rays, with typical Seyfert 1s values for the photon index (Gamma~1.8) and without significant intrinsic absorption, supporting the conclusion that some bright AGNs may genuinely lack a broad line region. Future, broad-band studies as well as deeper X-ray observations, probing both the spectral and the temporal properties of the naked AGNs, are crucial to shed light on the central engine of these sources, which may be representative of a large class of AGNs.
Foschini Luca
Gliozzi Mario
Sambruna Rita M.
No associations
LandOfFree
A Chandra view of Naked Active Galactic Nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Chandra view of Naked Active Galactic Nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Chandra view of Naked Active Galactic Nuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-285429