UVCS Observations of Post-CME Heating and Streamer Relaxation by Current Sheets

Details UVCS Observations of Post-CME Heating and Streamer Relaxation by Current Sheets UVCS Observations of Post-CME Heating and Streamer Relaxation by Current Sheets

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh12b0753c&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH12B-0753

Physics

7504 Celestial Mechanics, 7513 Coronal Mass Ejections, 7519 Flares, 7531 Prominence Eruptions, 7549 Ultraviolet Emissions

Scientific paper

Many flux rope models for Coronal Mass Ejections predict that a current sheet forms in the wake of the CME. This current sheet may heat both the post-CME X-ray arcade and the CME plasma, and it may be a play an important part in the relaxation of the post-CME corona to a structure similar to the pre-CME streamer. We present UVCS observations of events on March 23 1998, March 18 1999 and August 7 2001. Two show very high temperatures as indicated by [Fe XVIII] emission, and one shows only relatively normal coronal temperatures. We consider densities, pressures, outflow speed and the overall energy budget.

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