Hot Accretion Disks Revisited

Details Hot Accretion Disks Revisited Hot Accretion Disks Revisited

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...467...99b&link_type=abstract

Astrophysical Journal v.467, p.99

Physics

33

Accretion, Accretion Disks, Black Hole Physics, Elementary Particles, Plasmas, Radiation Mechanisms: Nonthermal

Scientific paper

All previous studies of hot (Tp 1010-1012 K), optically thin accretion disks have neglected either the presence of e+ e- pairs or advective cooling. Thus all hot disk models constructed previously have not been self-consistent. In this paper we calculate local disk models including pair physics, relevant radiative processes in the hot plasma, and the effect of advective cooling. We use a modification of the Björnsson & Svensson mapping method. We find that the role of e+ e- pairs in the structure of hot, optically thin accretion disks is far less significant than was previously thought. The improved description of the radiation-matter interactions provided in the present paper modify the previously obtained values of the critical parameters characterizing advectively dominated flows.

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