The lower-hybrid drift instability during the evolution of Kelvin-Helmholtz instability

被引:0
作者
Yuan, Huaxuanyu [1 ]
Yang, Yang [1 ]
Wang, Mingyue [1 ]
机构
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
关键词
The lower-hybrid drift instability; Kelvin-Helmholtz instability; the electric field in the electron frame; MAGNETOPAUSE; TURBULENCE; PARALLEL; WAVES;
D O I
10.1088/1402-4896/ad562b
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The lower-hybrid drift instability (LHDI) is a pivotal phenomenon in astrophysics, playing a critical role in energy transfer, macroscopic structures, and evolutionary processes between the magnetosheath and magnetosphere. Using 2D two-fluids numerical simulation, we investigate the spatiotemporal distribution of LHDI during the evolution of Kelvin-Helmholtz instability (KHI) at Earth's dusk-flank magnetopause. The numerical simulation results show that, during the linear phase of KHI, the LHDI, whose duration time is approximately Delta t 1 similar to 10t A , appears around the high-density arms. During the nonlinear phase of KHI, the LHDI appears around the KH vortexes, with a duration of about Delta t 2 similar to 5t A . The LHDI disappears with the decay of KH vortex.
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页数:7
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