Connotea
CiteULike
del.ico.us
BibSonomyAbstract
JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 111,
A11S18,
13 PP., 2006
doi:10.1029/2006JA011968
Parameter dependence of quick magnetic reconnection triggering: A survey study using two-dimensional simulations
Institute of Space and Astronautical Sciences, Japan Aerospace Exploration Agency, Kanagawa, Japan
Institute of Space and Astronautical Sciences, Japan Aerospace Exploration Agency, Kanagawa, Japan
Institute of Space and Astronautical Sciences, Japan Aerospace Exploration Agency, Kanagawa, Japan
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 = ω pe/Ωe, where ω pe 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.
Received 11 July 2006; accepted 13 October 2006; published 23 November 2006.
Citation: (2006), Parameter dependence of quick magnetic reconnection triggering: A survey study using two-dimensional simulations, J. Geophys. Res., 111, A11S18, doi:10.1029/2006JA011968.
Cited By