Temperature Anisotropy in a Shocked Plasma: Mirror-Mode Instabilities in the Heliosheath
Temperature Anisotropy in a Shocked Plasma: Mirror-Mode Instabilities in the Heliosheath
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DOI：
10.1086/516568
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发表时间：
2007-02
期刊：
影响因子：
--
通讯作者：
Y. Liu;J. Richardson;J. Belcher;J. Kasper
中科院分区：
文献类型：
--
作者：
Y. Liu;J. Richardson;J. Belcher;J. Kasper
We show that temperature anisotropies induced at a shock can account for interplanetary and planetary bow shock observations. Shocked plasma with enhanced plasma β is preferentially unstable to the mirror-mode instability downstream of a quasi-perpendicular shock and to the fire-hose instability downstream of a quasi-parallel shock, consistent with magnetic fluctuations observed downstream of a large variety of shocks. Our theoretical analysis of the solar wind termination shock suggests that the magnetic holes observed by Voyager 1 in the heliosheath are produced by the mirror-mode instability. The results are also of astrophysical interest, providing an energy source for plasma heating.
