Monthly Notices of the Royal Astronomical Society, ( ISI ), Volume (388), No (2), Year (2008-8) , Pages (663-668)

Title : ( The effects of thermal conduction on the ADAF with a toroidal magnetic field )

Authors: Shahram Abbassi , Jamshid Ghanbari , S. Najjar ,

Citation: BibTeX | EndNote

Abstract

The observation of the hot gas surrounding Sgr A* and a few other nearby galactic nuclei imply that electron and proton mean free paths are comparable to the gas capture radius. So, the hot accretion flows are likely to proceed under week-collision conditions. Hence, thermal conduction has been suggested as a possible mechanism by which the sufficient extra heating is provided in hot advection-dominated accretion flow (ADAF) accretion discs. We consider the effects of thermal conduction in the presence of a toroidal magnetic field in an ADAF around a compact object. For a steady-state structure of such accretion flows, a set of self-similar solutions are presented. We find two types of solutions which represent high and slow accretion rate. They have different behaviours with saturated thermal conduction parameter, φ.

Keywords

, accretion, accretion discs , black hole physics , conduction
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@article{paperid:1007663,
author = {Abbassi, Shahram and Ghanbari, Jamshid and S. Najjar},
title = {The effects of thermal conduction on the ADAF with a toroidal magnetic field},
journal = {Monthly Notices of the Royal Astronomical Society},
year = {2008},
volume = {388},
number = {2},
month = {August},
issn = {0035-8711},
pages = {663--668},
numpages = {5},
keywords = {accretion; accretion discs ; black hole physics ; conduction},
}

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%0 Journal Article
%T The effects of thermal conduction on the ADAF with a toroidal magnetic field
%A Abbassi, Shahram
%A Ghanbari, Jamshid
%A S. Najjar
%J Monthly Notices of the Royal Astronomical Society
%@ 0035-8711
%D 2008

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