Entropy Change of Black Holes in Disk-Accretion

Details Entropy Change of Black Holes in Disk-Accretion Entropy Change of Black Holes in Disk-Accretion

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999chphl..16..464w&link_type=abstract

Chinese Physics Letters, Volume 16, Issue 6, pp. 464-466 (1999).

Physics

2

Scientific paper

Entropy change of central black holes of accretion disks (including thin and thick disks) is investigated by considering both accretion and the Blandford-Znajek (BZ) process in detail. It is shown that the contribution of the BZ process to the rate of change of black hole entropy is always less than that arising from accretion process in the case of thin disks, while the former may be greater than the latter for a fast-spinning black hole surrounded by a thick disk. In addition the non-monotonic characteristics of the rate of change of black hole entropy in the BZ process are discussed.

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