2000A&A...361..781B


Query : 2000A&A...361..781B

2000A&A...361..781B - Astronomy and Astrophysics, volume 361, 781-787 (2000/9-2)

Analysis of self-similar solution of the advection dominated flows around a black hole.

BHATT J.R. and PRASANNA A.R.

Abstract (from CDS):

We analyze self-similar solution of advection dominated accretion flows around a black-hole. The effect of a pseudo-Newtonian potential is introduced perturbatively, i.e., by regarding the general relativistic effects to be small. Comparison is made with the exact global numerical solutions that exist in the literature. It is demonstrated that the perturbative analysis can give better representation and insight into the parameter space of the solution. We find over a large range of the viscosity parameter, that self-similarity could be an excellent approximation. However, for certain values of the viscosity parameter and the gas parameter γ, the perturbation can have a singularity. Consequently, the assumption of self-similarity could be violated at distances far away from the central black hole. Implication of the perturbative analysis is discussed.

Abstract Copyright:

Journal keyword(s): hydrodynamics - black hole physics - accretion, accretion disks

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 1A 0620-00 HXB 06 22 44.5423857312 -00 20 44.290460544 10.60 11.40 11.2     K3V-K7V 1068 0
2 V* GU Mus HXB 11 26 26.5961559600 -68 40 32.877752952           K3V-K7V 687 1
3 V* V404 Cyg HXB 20 24 03.8254458776 +33 52 01.962185735           G9/K0III/V 1174 0

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2022.05.28-06:22:51

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