Thermal Instability of a Reconnecting Current Layer as a Trigger for Solar Flares

Леденцов, Л.С.; Сомов, Б.В.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 ноября 2017 г.

Авторы: Леденцов Л.С., Сомов Б.В.
Журнал: Journal of Experimental and Theoretical Physics
Том: 125
Номер: 2
Год издания: 2017
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 348
Последняя страница: 357
DOI: 10.1134/S1063776117070214
Аннотация: The stability of small perturbations of a reconnecting current layer (CL) in a plasma with a strong magnetic field has been investigated in the approximation of dissipative magnetohydrodynamics. The case where the wave vector of the perturbations is parallel to the electric current in the CL has been considered. The suppression of plasma heat conduction by a magnetic field perturbation inside the CL is shown to be responsible for the instability. At the linear stage of instability development the perturbations grow with the characteristic radiative plasma cooling time calculated in the approximation of an optically thin plasma with cosmic abundances of elements. The formation of a periodic structure of cold and hot magnetic flux tubes, filaments, located across the direction of the electric current should be expected at the nonlinear stage of the instability in the CL. The proposed mechanism of the thermal CL instability can explain the sequential brightening, ignition, in the arcades of magnetic loops in solar flares.
Добавил в систему: Леденцов Леонид Сергеевич

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