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Black hole masses from X-rays

Published online by Cambridge University Press:  21 February 2013

Xin-Lin Zhou  and
Roberto Soria
Xin-Lin Zhou
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China email: zhouxl@nao.cas.cn
Roberto Soria
Affiliation:
International Centre for Radio Astronomy Research, Curtin UniversityGPO Box U1987, Perth, WA 6845, Australia email: roberto.soria@icrar.org
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Abstract

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We discuss two methods to estimate black hole (BH) masses using X-ray data only: from the X-ray variability amplitude and from the photon index Γ. The first method is based on the anti-correlation between BH mass and X-ray variability amplitude. Using a sample of AGN with BH masses from reverberation mapping, we show that this method shows small intrinsic scatter. The second method is based on the correlation between Γ and both the Eddington ratio Lbol/LEdd and the bolometric correction Lbol/L2−10keV.

Keywords

Accretionaccretion disksX-rays:binariesX-rays: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 371 - 372
Copyright
Copyright © International Astronomical Union 2013

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