Active-Region Transient Brightenings and the Heating of Active Region Corona

Details Active-Region Transient Brightenings and the Heating of Active Region Corona Active-Region Transient Brightenings and the Heating of Active Region Corona

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994kofu.symp...61s&link_type=abstract

In: Proceedings of Kofu Symposium, Kofu, Japan, Sept. 6-10, 1993, p.61-64.

Physics

4

Scientific paper

We examine the possibility that active-region transient brightenings contribute to the heating of active region corona. The energy involved in a transient brightening is estimated to range from 10^25 to 10^29 ergs. The frequency distribution as a function of energy can be represented with a single power law with an index 1.5 - 1.6 in the energy range greater than 10^27 ergs, although the distribution deviates from the power law in the energy range smaller than 10^27 ergs due to the dead time and/or the obscuration by bright background features. In addition, the total energy supplied by the power law distribution of transient brightenings, assuming that the power law continues to lower energy, is of one order of magnitude smaller than the heating rate required in active region corona.

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