THE BLACK HOLE SPIN AND SOFT X-RAY EXCESS OF THE LUMINOUS SEYFERT GALAXY FAIRALL 9
Author(s)
Lohfink, Anne M.; Reynolds, Christopher S.; Miller, Jon M.; Brenneman, Laura W.; Mushotzky, Richard F.; Nowak, Michael A.; Fabian, Andrew C.; ... Show more Show less
DownloadLohfink-2012-THE BLACK HOLE SPIN.pdf (1.509Mb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
We present an analysis of all XMM-Newton and Suzaku X-ray spectra of the nearby luminous Seyfert galaxy Fairall 9. Confirming previous analyses, we find robust evidence for a broad iron line associated with X-ray reflection from the innermost accretion disk. By fitting a spectral model that includes a relativistically ionized reflection component, we examine the constraints on the inclination of the inner accretion disk and the black hole spin, and the complications introduced by the presence of a photoionized emission line system. Employing multi-epoch fitting, we attempt to obtain robust and concordant measures of the accretion disk parameters. We also clearly see a soft X-ray excess in Fairall 9. During certain epochs, the soft excess can be described with the same disk reflection component that produces the iron line. However, there are epochs where an additional soft component is required. This can be attributed to either an additional highly ionized, strongly blurred disk reflection component or a new X-ray continuum component.
Date issued
2012-09Department
MIT Kavli Institute for Astrophysics and Space ResearchJournal
The Astrophysical Journal
Publisher
IOP Publishing
Citation
Lohfink, Anne M., Christopher S. Reynolds, Jon M. Miller, Laura W. Brenneman, Richard F. Mushotzky, Michael A. Nowak, and Andrew C. Fabian. “THE BLACK HOLE SPIN AND SOFT X-RAY EXCESS OF THE LUMINOUS SEYFERT GALAXY FAIRALL 9.” The Astrophysical Journal 758, no. 1 (September 26, 2012): 67. © 2012 The American Astronomical Society
Version: Final published version
ISSN
0004-637X
1538-4357