Statistic study on global shape of dayside magnetopause reconnection X line: based on Cluster & TC1 observations

Details Statistic study on global shape of dayside magnetopause reconnection X line: based on Cluster & TC1 observations Statistic study on global shape of dayside magnetopause reconnection X line: based on Cluster & TC1 observations

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm21a1553w&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM21A-1553

Physics

[2700] Magnetospheric Physics, [2723] Magnetospheric Physics / Magnetic Reconnection, [2724] Magnetospheric Physics / Magnetopause And Boundary Layers, [2784] Magnetospheric Physics / Solar Wind/Magnetosphere Interactions

Scientific paper

In this study, we surveyed the Cluster and Double Star/TC1 data, trying to figure out the global configuration of dayside magnetopause (MP) reconnection X line. After removing the background flow, 1340 fast jets were characterized under southward and By-dominant IMF conditions. Suppose that the out-flow jets should be perpendicular to the X line at the reconnection site, the X line orientation could be obtained by calculating the “most perpendicular” direction. Looking into the jets under general southward and By-dominant IMF condition, the X line orientations were found to be consistent with combined anti-parallel & perpendicular model suggested by Moore et al.. Also, it is obtained that the low latitude reconnection X line obliquity strongly depends on the IMF clock angle. The relationship can be approximately represented as: θ = 0.24 * ( A_IMF - 180 ) + 91

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