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Extremal energy shifts of radiation from a ring near a rotating black hole

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    0350481 - ASÚ 2011 RIV US eng J - Journal Article
    Karas, Vladimír - Sochora, Vjačeslav
    Extremal energy shifts of radiation from a ring near a rotating black hole.
    Astrophysical Journal. Roč. 725, č. 2 (2010), s. 1507-1515. ISSN 0004-637X. E-ISSN 1538-4357
    R&D Projects: GA ČR GA205/07/0052; GA MŠMT(CZ) LC06014
    Grant - others:ESA(XE) ESA-PECS project No. 98040
    Institutional research plan: CEZ:AV0Z10030501
    Keywords : black holes * accretion
    Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
    Impact factor: 7.436, year: 2010

    We describe a useful approach to calculate the extremal energy shifts in the regime of strong gravity. Then we consider an accretion disk consisting of a number of separate nested annuli in the equatorial plane of a Kerr black hole, above the innermost stable circular orbit. We suggest that the radial structure of the disk emission could be reconstructed using the extremal energy shifts of the individual rings deduced from the broad wings of a relativistic spectral line.
    Permanent Link: http://hdl.handle.net/11104/0190479

     
     
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