Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..91....9z&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 91, no. 1, March 1983, p. 9-18.
Astronomy and Astrophysics
Astronomy
Accretion Disks, Black Holes (Astronomy), Temperature Profiles, Black Body Radiation, Bremsstrahlung, Hydrodynamic Equations
Scientific paper
In this paper, the more rigorous general relativistic viscous hydrodynamical equation is used to discuss and calculate the temperature profile in the accreting disk around a Kerr black hole. It is found that for an accreting disk around a Kerr black hole, the occurrence of extremum values in the temperature profile is indeed possible. Furthermore, the temperature profile is always the same - no matter what kind of viscous mechanism is adopted - if the radiative mechanism of the materials in the disk is black-body radiation. For free-free radiation, the so-called alpha-viscosity law model is adopted to get a solution analogous to that obtained earlier (Fang et al., 1980). The calculations show that there exists a fast cooling ring region lying just inside the temperature maximum. In this ring region, there are probably some peculiarities which do not exist in the usual temperature profile calculation (Fang, 1981).
Jiang Sanyuan
Zhang James J.
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