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Revealing the general relativity effects in accretion events near a supermassive black hole
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SYSNO ASEP 0359757 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Revealing the general relativity effects in accretion events near a supermassive black hole Author(s) Karas, Vladimír (ASU-R) RID, ORCID
Dovčiak, Michal (ASU-R) RID, ORCID
Zamaninasab, M. (DE)
Eckart, A. (DE)Number of authors 4 Source Title The Galactic Center: A Window to the Nuclear Environment of Disk Galaxies. - San Francisco : Astronomical Society of the Pacific, 2011 / Morris M. R. ; Wang Q. D. ; Yuan F. - ISBN 978-1-58381-758-2 Pages s. 344-345 Number of pages 2 s. Action The Galactic Centre: A Window to the Nuclear Environment of Disk Galaxies Event date 19.10.2009-23.10.2009 VEvent location Shanghai Country CN - China Event type WRD Language eng - English Country US - United States Keywords galactic centre Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics R&D Projects GA205/07/0052 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000291890200067 Annotation We discuss the general relativity effects acting on the radiation signal from the inner accretion flow. We consider the radiation flux and polarization properties originating from a blob of gas near a rotating black hole. The predicted observed polarization at infinity is changed from its local value due to strong gravity and fast orbital motion. Different processes can produce the observed pattern: in the context of Sgr A* flares, the synchrotron mechanism and the inverse Compton up-scattering appear to be the most likely mechanisms. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2012
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