Cluster Spacecraft Observations of Antiparallel and Component Magnetic Reconnection Close to the X-line at the High-Latitude Magnetopause

Details Cluster Spacecraft Observations of Antiparallel and Component Magnetic Reconnection Close to the X-line at the High-Latitude Magnetopause Cluster Spacecraft Observations of Antiparallel and Component Magnetic Reconnection Close to the X-line at the High-Latitude Magnetopause

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm53b0405r&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SM53B-0405

Physics

7811 Discontinuities, 7835 Magnetic Reconnection, 7859 Transport Processes, 2724 Magnetopause, Cusp, And Boundary Layers, 2772 Plasma Waves And Instabilities

Scientific paper

We present Cluster spacecraft observations of two magnetopause crossings close to a magnetic reconnection X-line. The crossings occur during the same event within a time interval of about 10 minutes. We interpret the first crossing as a component reconnection X-line crossing and the second crossing as an antiparallel reconnection X-line crossing. The crossings occur on the duskside high-latitude magnetopause tailward of the cusp under dominant northward interplanetary magnetic field (IMF) BZ and variable IMF BY. That passages are close to the X-line is concluded from the reversals of the ion reconnection jets. A detailed analysis of the two crossings is done using high resolution data from field and particle instruments. We identify and describe different regions close to the X-line e.g. inflow region, outflow region and separatrices. We discuss the results of the observations in terms of differences between component and antiparallel reconnection at the high-latitude magnetopause and compare them with recent simulations of magnetic reconnection.

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