Origin of the X-ray disc-reflection steep radial emissivity

0380460 - ASÚ 2013 RIV FR eng J - Journal Article
Svoboda, Jiří - Dovčiak, Michal - Goosmann, R. W. - Jethwa, P. - Karas, Vladimír - Miniutti, G. - Guainazzi, M.
Origin of the X-ray disc-reflection steep radial emissivity.
Astronomy & Astrophysics. Roč. 545, September (2012), A106/1-A106/10. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA MŠMT ME09036
Institutional support: RVO:67985815
Keywords : black holes * accretion disks
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 5.084, year: 2012

X-ray reflection off the accretion disc surrounding a black hole, together with the associated broad iron Kα line, has been widely used to constrain the innermost accretion-flow geometry and black hole spin. Some recent measurements have revealed steep reflection emissivity profiles in a number of active galactic nuclei and X-ray binaries. We explore the physically motivated conditions that give rise to the observed steep disc-reflection emissivity profiles. We perform a set of simulations based on the configuration of a possible future high-resolution X-ray mission. Computations are carried out for typical X-ray bright Seyfert-1 galaxies.
Permanent Link: http://hdl.handle.net/11104/0211168