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Detailed Reference Information |
Tanaka, K.G., Shinohara, I. and Fujimoto, M. (2006). Parameter dependence of quick magnetic reconnection triggering: A survey study using two-dimensional simulations. Journal of Geophysical Research 111: doi: 10.1029/2006JA011968. issn: 0148-0227. |
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The current sheet structure modification by lower-hybrid drift instability (LHDI) has been shown to lead to quick magnetic reconnection triggering (QMRT) even in a thick current sheet (Tanaka et al., 2005). The three-dimensional simulations, however, have been limited to certain sets of parameters. Having learned which effects of LHDI are crucial for QMRT in these three-dimensional results, we perform a series of two-dimensional simulations of LHDI (reconnection itself not included) with various current sheet thickness D, guide field intensity B0y, and the frequency ratio τ (τ = ωpe/Ωe, where ωpe is the electron plasma frequency and Ωe is the electron gyrofrequency) and inspect how these parameters affect the QMRT process. While QMRT looked promising in the three-dimensional studies with B0y = 0 and τ = 1, the two realistic factors, nonzero guide field and τ larger than 1, requires rather small current sheet thickness for QMRT to be operative in the magnetospheric situations. |
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Abstract |
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Keywords
Magnetospheric Physics, Ring current, Magnetospheric Physics, Magnetosphere, outer, Magnetospheric Physics, Magnetosphere, inner, Space Weather, Magnetic storms |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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