STEREO Observations of a post-CME Current Sheet

Details STEREO Observations of a post-CME Current Sheet STEREO Observations of a post-CME Current Sheet

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh13b1552p&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SH13B-1552

Physics

7513 Coronal Mass Ejections (2101)

Scientific paper

Ray-like features in the wake of Coronal Mass Ejections (CMEs) are often interpreted as current sheets produced by the eruption. The 3D geometry of such post-CME current sheets is largely unknown and its knowledge should place important constraints on CME physics and coronal conditions. An example of a post-CME current sheet was observed on April 9th 2008, in the aftermath of the 'cartwheel' CME, which was observed by Hinode, SoHO, STEREO and TRACE. The CME and the corresponding current sheet were well-observed by both STEREO spacecraft, which were separated by about 48 degrees the day of the event. We present here an analysis of the 3D morphology of the current sheet using data from the COR1 and COR2 coronagraphs from both STEREO spacecraft. We will attempt various forward models (e.g., slabs, cylinders) of the current sheet as seen by the COR1 and COR2 coronagraphs from both STEREO spacecraft. This will characterize the 3D geometry of the current sheet and more precisely its shape and its real width and length. Our forward modeling will also supply the radial variation of the density along the current sheet. This information will supply some estimates of the temperature and magnetic field distributions in and out the current sheet respectively.

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