Astrophysical Journal, ( ISI ), Volume (887), No (2), Year (2019-12) , Pages (256-263)

Title : ( Thermal Instability of Thin Accretion Disks in the Presence of Wind and a Toroidal Magnetic Field )

Authors: Asiheh Habibi , Shahram Abbassi ,

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Abstract

We study the local thermal stability of thin accretion disks. We present a full stability analysis in the presence of a magnetic field and, more importantly, wind. We use a general model suitable for adequately describing several kinds of winds. First, we explicitly show that the magnetic field, irrespective of the type of wind, has a stabilizing effect. This is also true when there is no wind. In this case, we confirm other works presented in the literature. However, our main objective is to investigate the local thermal stability of the disk in the presence of wind. In this case, interestingly, the response of the disk is directly related to the type of wind. In other words, in some cases, the wind can stabilize the disk. On the other hand, in some cases it can destabilize the disk. We find that in some thin disk models where the magnetic pressure cannot explain the stability of the disk by including a typical contribution for magnetic pressure, wind can provide a viable explanation for the thermal stability.

Keywords

Stellar accretion disks (1579); Magnetic fields (994); Stellar winds (1636)
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@article{paperid:1077724,
author = {اسیه حبیبی and Abbassi, Shahram},
title = {Thermal Instability of Thin Accretion Disks in the Presence of Wind and a Toroidal Magnetic Field},
journal = {Astrophysical Journal},
year = {2019},
volume = {887},
number = {2},
month = {December},
issn = {0004-637X},
pages = {256--263},
numpages = {7},
keywords = {Stellar accretion disks (1579); Magnetic fields (994); Stellar winds (1636)},
}

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%0 Journal Article
%T Thermal Instability of Thin Accretion Disks in the Presence of Wind and a Toroidal Magnetic Field
%A اسیه حبیبی
%A Abbassi, Shahram
%J Astrophysical Journal
%@ 0004-637X
%D 2019

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