Thermomagnetic instability in hot discs

Edward Liverts; Michael Mond; Vadim Urpin

doi:10.1111/j.1365-2966.2010.16271.x

Thermomagnetic instability in hot discs

Edward Liverts, Michael Mond, Vadim Urpin

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

A linear stability analysis of ionized discs with a temperature gradient and an external axial magnetic field is presented. It is shown that both hydromagnetic and thermomagnetic effects can lead to the amplification of waves and make discs unstable. The conditions under which the instabilities grow are found and the characteristic growth rate is calculated. The regimes at which both the thermomagnetic and magnetorotational instabilities can operate are discussed.

Original language	English
Pages (from-to)	283-288
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	404
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2010.16271.x
State	Published - 1 Jan 2010

Keywords

Accretion,accretion discs
Instabilities
MHD

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1111/j.1365-2966.2010.16271.x

Cite this

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AB - A linear stability analysis of ionized discs with a temperature gradient and an external axial magnetic field is presented. It is shown that both hydromagnetic and thermomagnetic effects can lead to the amplification of waves and make discs unstable. The conditions under which the instabilities grow are found and the characteristic growth rate is calculated. The regimes at which both the thermomagnetic and magnetorotational instabilities can operate are discussed.

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KW - Instabilities

KW - MHD

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Thermomagnetic instability in hot discs

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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