Statistics of relativistically broadened Fe K-alpha lines in AGN

Details Statistics of relativistically broadened Fe K-alpha lines in AGN Statistics of relativistically broadened Fe K-alpha lines in AGN

2006-10-05

arxiv.org/abs/astro-ph/0610151v1

Astron.Nachr. 88 (2006) 789-795

Astronomy and Astrophysics

Astrophysics

4 pages, 9 figures, to appear in Astronomische Nachrichten, Proceedings of the ESAC Workshop "Variable and broad lines around

Scientific paper

10.1002/asna.200610687

We present preliminary results on the properties of relativistically broadened Fe K-alpha lines in a collection of more then 100 Active Galactic Nuclei (AGN) observed by the XMM-Newton EPIC-pn camera. Our main conclusions can be summarized as follows: a) we detect broad lines in about 25% of the sample objects. This fraction increases to 42+/-13% if we consider only objects with more than 10000 counts in the hard (2-10 keV) band, and to 50+/-32% for the small sub-sample (6 objects) of type~1 Piccinotti AGN with optimal XMM-Newton exposure (at least 200000 counts in the hard band); b) we find no significant difference in the detection rate of broad lines between obscured and unobscured AGN; c) the strongest relativistic profiles are measured in low-luminosity (< 10^43 erg/s) AGN; d) Equivalent Widths (EWs) associated with relativistic profiles in stacked spectra are ~150 eV for all luminosity classes; e) models of relativistically broadened iron line profiles ("kyrline", Dovciak et al. 2005), which include full relativistic treatment of the accretion disk emission around a Kerr black hole in the strong gravity regime, yield an average disk inclination angle ~30 degrees, and a radial dependence of the disk emissivity profile ~-3. The distribution of EW is very broad, with =2.4. We estimate that an investment of about 1 Ms of XMM-Newton time would be required to put these results on a sound statistical basis.

Affiliated with

Also associated with

No associations

Rating

Statistics of relativistically broadened Fe K-alpha lines in AGN 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 Statistics of relativistically broadened Fe K-alpha lines in AGN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistics of relativistically broadened Fe K-alpha lines in AGN will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-655638