Instabilities of a multicomponent plasma with accelerated particles and magnetic field generation in astrophysical objects

A.M. Bykov^a, I.N. Toptygin^b
^aIoffe Institute, ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation
^bSt. Petersburg State Polytechnical University, Politekhnicheskaya str. 29, St. Petersburg, 195251, Russian Federation

A system of MHD equations for the description of a magnetized nonequilibrium astrophysical plasma with neutral atoms and suprathermal (in particular, relativistic) particles is formulated. The instabilities of such a plasma, which arise from the presence of neutral and relativistic components, are considered. It is shown that the presence of nonthermal particles interacting with the thermal plasma component via regular and fluctuating electromagnetic fields is responsible for the emergence of specific mechanisms of MHD wave generation. The main generation mechanisms of static and turbulent magnetic fields near shock wave fronts in the Galaxy and interplanetary space are analyzed. We discuss the application of the generation effects of long-wave magnetic fluctuations to the problems of magnetic field origin and relativistic particle acceleration in astrophysical objects of various natures.

PACS: 52.35.−g, 52.59.−f, 95.30.Qd (all)
DOI: 10.1070/PU2007v050n02ABEH006177
URL: https://ufn.ru/en/articles/2007/2/b/
Web of Science

000247098500002
Scopus

2-s2.0-34250326327
ADS NASA

2007PhyU...50..141B
Citation: Bykov A M, Toptygin I N "Instabilities of a multicomponent plasma with accelerated particles and magnetic field generation in astrophysical objects" Phys. Usp. 50 141–174 (2007)

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Оригинал: Быков А М, Топтыгин И Н «Неустойчивости многокомпонентной плазмы с ускоренными частицами и генерация магнитных полей в астрофизических объектах» УФН 177 149–182 (2007); DOI: 10.3367/UFNr.0177.200702b.0149

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