Astrophysical Journal, ( ISI ), Volume (750), No (1), Year (2012-12) , Pages (57-67)

Title : ( SELF-SIMILAR STRUCTURE OF A HOT MAGNETIZED FLOW WITH THERMAL CONDUCTION )

Authors: maryam ghasemnezhad bafandeh , Mehdi Khajavi , Shahram Abbassi ,

Citation: BibTeX | EndNote

Abstract

We have explored the structure of a hot magnetized accretion flow with thermal conduction. The importance of thermal conduction in hot accretion flows has been confirmed by observations of the hot gas surrounding Sgr A∗ and a few other nearby galactic nuclei. For a steady state structure of such accretion flows, a set of self-similar solutions is presented. In this paper, we have actually tried to re-check the solution presented by Abbassi et al. using a physical constraint. In this study, we find that Equation (29) places a new constraint that limits answers presented by Abbassi et al. In that paper, the parameter space, which is established in the new constraint, was plotted. However, the new requirement makes up only a small parameter space with physically acceptable solutions. And now in this paper, we have followed the idea with more effort and tried to find out how thermal conduction influences the structure of the disks in a physical parameter space. We have found that the existence of thermal conduction will lead to the reduction of accretion and radial and azimuthal velocities as well as the vertical thickness of the disk, which is slightly reduced. Moreover, the surface density of the disk will increase when thermal conduction becomes important in hot magnetized flow.

Keywords

, accretion, accretion disks – conduction – magnetic fields
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@article{paperid:1046478,
author = {Ghasemnezhad Bafandeh, Maryam and Khajavi, Mehdi and Abbassi, Shahram},
title = {SELF-SIMILAR STRUCTURE OF A HOT MAGNETIZED FLOW WITH THERMAL CONDUCTION},
journal = {Astrophysical Journal},
year = {2012},
volume = {750},
number = {1},
month = {December},
issn = {0004-637X},
pages = {57--67},
numpages = {10},
keywords = {accretion; accretion disks – conduction – magnetic fields},
}

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%0 Journal Article
%T SELF-SIMILAR STRUCTURE OF A HOT MAGNETIZED FLOW WITH THERMAL CONDUCTION
%A Ghasemnezhad Bafandeh, Maryam
%A Khajavi, Mehdi
%A Abbassi, Shahram
%J Astrophysical Journal
%@ 0004-637X
%D 2012

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