Continuous reconnection line and pressure-dependent energy conversion on the magnetopause in a global MHD model

Details Continuous reconnection line and pressure-dependent energy conversion on the magnetopause in a global MHD model Continuous reconnection line and pressure-dependent energy conversion on the magnetopause in a global MHD model

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jgra..11211201l&link_type=abstract

Journal of Geophysical Research, Volume 112, Issue A11, CiteID A11201

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Magnetospheric Physics: Magnetic Reconnection (7526, 7835), Magnetospheric Physics: Magnetopause And Boundary Layers, Space Plasma Physics: Magnetic Reconnection (2723, 7526), Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Computational Geophysics: Modeling (4255)

Scientific paper

We present results on magnetopause reconnection processes in the Gumics-4 global MHD simulation model. The reconnection line on the magnetopause is identified using a topological method, and its behavior as a function of the interplanetary magnetic field (IMF) direction is shown to be consistent with the component reconnection hypothesis. Energy conversion associated with reconnection is quantified using integrals of Poynting vector divergence. The efficiency of energy conversion depends on both the IMF direction and the solar wind dynamic pressure. We vary the solar wind speed and density separately and show that while both affect the appearance of magnetopause processes, speed has a much stronger effect on the total reconnection efficiency.

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