Impulsive Events and Coronal Loop Cooling Observed with TRACE

Details Impulsive Events and Coronal Loop Cooling Observed with TRACE Impulsive Events and Coronal Loop Cooling Observed with TRACE

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh11a0705s&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH11A-0705

Physics

7509 Corona, 7524 Magnetic Fields

Scientific paper

Nearly every active region imaged by TRACE contains sporadic brightenings in coronal loops. Many of these ubiquitous, short-lived events appear nearly simultaneously in the Fe IX/X (log T e≈ 6.0) and the C IV channel (log T≈ 5.0); hence, we interpret them as the rapid cooling of a multifilament loops. A particularly good example of such an event was observed on 21, June 2001, as part of an hour long active region observation; a total of 52 of the TRACE 171 Å and 68 TRACE 1600 Å images have been analyzed from that sequence, as well as 35 images provided by the MDI aboard SOHO. In this poster, we will discuss the analysis of the events and the implications of our cooling model.

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