Are Heating Events in the Quiet Solar Corona Small Flares?

Details Are Heating Events in the Quiet Solar Corona Small Flares? Are Heating Events in the Quiet Solar Corona Small Flares?

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sp52b03k&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SP52B-03

Physics

7509 Corona, 7519 Flares

Scientific paper

Temporary enhancements of the coronal emission measure in a quiet region have been shown to constitute a significant energy input. Here some relatively large events (Yohkoh, EIT Observations) are discussed and tested for characteristics known from full-sized impulsive flares in active regions. The differences to active region flares seem to be mainly quantitative, and the analyzed heating events may in principle be considered as microflares or large nanoflares, thus small versions of regular flares. In this presentation we focus on the following questions: (1) Are there related events seen in transient region lines (CDS/SUMER observations)? (2) What are the relative contributions of the thermal, potential, and expansion energy to the total energy released in these events. (3) Are the reported flare temperatures in quiet regions of 1-2 MK possibly higher (3-5 MK)?

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