ABRAMOWICZ, Marek. Leaving the ISCO: the inner edge of a black-hole accretion disk at various luminosities. Astronomy & Astrophysics. FR - Francouzská republika, 2010, vol. 521, A15, 13 pp. ISSN 0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/201014467.
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Basic information
Original name Leaving the ISCO: the inner edge of a black-hole accretion disk at various luminosities
Authors ABRAMOWICZ, Marek.
Edition Astronomy & Astrophysics, FR - Francouzská republika, 2010, 0004-6361.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1051/0004-6361/201014467
UT WoS 000284150900076
Keywords in English black holes, accretion disks, inner edge
Tags FÚ, MSM4781305903
Tags International impact, Reviewed
Links MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 8/12/2020 11:30.
Abstract
The ?radiation inner edge? of an accretion disk is defined as the inner boundary of the region from which most of the luminosity emerges. Similarly, the ?reflection edge? is the smallest radius capable of producing a significant X-ray reflection of the fluorescent iron line. For black hole accretion disks with very sub-Eddington luminosities these and all other ?inner edges? locate at ISCO. Thus, in this case, one may rightly consider ISCO as the unique inner edge of the black hole accretion disk. However, even for moderate luminosities, there is no such unique inner edge as differently defined edges locate at different places. Several of them are significantly closer to the black hole than ISCO. The differences grow with the increasing luminosity. Fornearly Eddington luminosities, they are so huge that the notion of the inner edge losses all practical significance.
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