Stability of Accretion Disks in Presence of Nucleosynthesis

Details Stability of Accretion Disks in Presence of Nucleosynthesis Stability of Accretion Disks in Presence of Nucleosynthesis

2001-03-15

arxiv.org/abs/astro-ph/0103230v1

Astrophys.J. 555 (2001) 816

Astronomy and Astrophysics

Astrophysics

18 Latex pages, 6 figures; Accepted for publication in ApJ; aaspp4.sty

Scientific paper

10.1086/321509

We study the effect of nuclear reaction on a thin, axisymmetric, differentially rotating, inviscid, steady accretion flow around a black hole from an analytical point of view. We find that for most of the reasonable disk parameters, when $p-p$-reaction, dissociation of deuterium and helium are taken into account, the transonic region of the disk continues to have the inner sonic point and if the temperature of the flow at the injection sonic point could be raised (by say, some heating processes) the flow would to pass through this inner sonic point. Otherwise, the flow may be unstable. We use the sonic point analysis to study the solution. In the rest of the disk parameters the inner sonic point is absent altogether and the flow will definitely be unstable.

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