Linear growth rates of resistive tearing modes with sub-Alfvénic streaming flow
Linear growth rates of resistive tearing modes with sub-Alfvénic streaming flow
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DOI：
10.1063/1.4886360
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发表时间：
2014-07
影响因子：
2.2
通讯作者：
L. N. Wu;Zhiwei Ma
中科院分区：
文献类型：
--
作者：
L. N. Wu;Zhiwei Ma
The tearing instability with sub-Alfvenic streaming flow along the external magnetic field is investigated using resistive MHD simulation. It is found that the growth rate of the tearing mode instability is larger than that without the streaming flow. With the streaming flow, there exist two Alfven resonance layers near the central current sheet. The larger perturbation of the magnetic field in two closer Alfven resonance layers could lead to formation of the observed cone structure and can largely enhance the development of the tearing mode for a narrower streaming flow. For a broader streaming flow, a larger separation of Alfven resonance layers reduces the magnetic reconnection. The linear growth rate decreases with increase of the streaming flow thickness. The growth rate of the tearing instability also depends on the plasma beta (β). When the streaming flow is embedded in the current sheet, the growth rate increases with β if β βs. The existence of the specific value βs can...
