A note on the Weibel instability and thermal fluctuations

Дата и время публикации : 2012-02-24T11:46:42Z

Авторы публикации и институты :
R. A. Treumann
W. Baumjohann

Ссылка на журнал-издание: Ann. Geophys., 30, 427–431, 2012
Коментарии к cтатье: 4 pages, 2 figures, accepted by Ann Geophys
Первичная категория: astro-ph.CO

Все категории : astro-ph.CO, physics.geo-ph, physics.space-ph

Краткий обзор статьи: The thermal fluctuation level of the Weibel instability is recalculated. It is shown that the divergence of the fluctuations at long wavelengths, i.e. the Weibel infrared catastrophe, never occurs. At large wavelengths the thermal fluctuation level is terminated by the presence of even the smallest available stable thermal anisotropy. Weibel fields penetrate only one skin depth into the plasma. When excited inside, they cause layers of antiparallel fields of skin depth width and vortices which may be subject to reconnection.

Category: Physics