Polarization signatures of strong gravity by reflection from accretion discs

0345823 - ASÚ 2015 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Dovčiak, Michal - Goosmann, René - Karas, Vladimír - Matt, G. - Muleri, F. - Svoboda, Jiří
Polarization signatures of strong gravity by reflection from accretion discs.
X-ray astronomy 2009: Present status, multi-wavelength approach and future perspectives. Melville: American Institute of Physics, 2010 - (Zatloukal, M.), s. 419-420. AIP Conference Proceedings, 1248. ISBN 978-0-7354-0795-4. ISSN 0094-243X.
[X-ray astronomy 2009. Bologna (IT), 07.09.2009-11.09.2009]
Výzkumný záměr: CEZ:AV0Z10030501
Klíčová slova: black hole * accretion disc * polarization
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

The effects of strong gravity on the polarization of the Compton reflection from an X- ray illuminated accretion disc are studied. The gravitational field of a rotating black hole influences Stokes parameters of the radiation along the propagation to a distant observer. Assuming powerlaw illumination of the disc by corona, the degree of polarization is examined as a function of the black hole spin, observer’s inclination angle and height of the primary source.
Trvalý link: http://hdl.handle.net/11104/0187008