Monthly Notices of the Royal Astronomical Society, ( ISI ), Volume (470), No (4), Year (2017-7) , Pages (2018-2033)

Title : ( How Does an Asymmetric Magnetic Field Change The Vertical Structure of a Hot Accretion Flow? )

Authors: Maryam Samadimojarad , SHahram Abbasi , R. Lovelace ,

Citation: BibTeX | EndNote

This paper explores the effects of large-scale magnetic fields in hot accretion flows for asym- metric configurations with respect to the equatorial plane. The solutions that we have found show that the large-scale asymmetric magnetic field can significantly affect the dynamics of the flow and also cause notable outflows in the outer parts. Previously, we treated a viscous resistive accreting disc in the presence of an odd symmetric B-field about the equatorial plane. Now, we extend our earlier work by taking into account another configuration of large-scale magnetic field that is no longer symmetric. We provide asymmetric field structures with small deviations from even and odd symmetric B-field. Our results show that the disc’s dynamics and appearance become different above and below the equatorial plane. The set of solutions also predicts that even a small deviation in a symmetric field causes the disc to compress on one side and expand on the other. In some cases, our solution represents a very strong outflow from just one side of the disc. Therefore, the solution may potentially explain the origin of one-sided jets in radio galaxies.

Keywords

, accretion, accretion discs – black hole physics – magnetic fields – MHD – methods:
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@article{paperid:1063527,
author = {Samadimojarad, Maryam and Abbasi, SHahram and R. Lovelace},
title = {How Does an Asymmetric Magnetic Field Change The Vertical Structure of a Hot Accretion Flow?},
journal = {Monthly Notices of the Royal Astronomical Society},
year = {2017},
volume = {470},
number = {4},
month = {July},
issn = {0035-8711},
pages = {2018--2033},
numpages = {15},
keywords = {accretion; accretion discs – black hole physics – magnetic fields – MHD – methods: numerical.},
}

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%0 Journal Article
%T How Does an Asymmetric Magnetic Field Change The Vertical Structure of a Hot Accretion Flow?
%A Samadimojarad, Maryam
%A Abbasi, SHahram
%A R. Lovelace
%J Monthly Notices of the Royal Astronomical Society
%@ 0035-8711
%D 2017

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