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Flare coronal loop heating and hard X-ray emission from solar flares of August 23, 2005, and November 9, 2013
Authors:Tsap  Yu T  Motorina  G G  Kopylova  Yu G
Institution:1.Pulkovo Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, 196140, Russia
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Abstract:

The thermal balance and hard X-ray emission of coronal loops for two solar events have been considered in the scope of a “standard” flare model. An important role of the thermal energy release is justified by the event of August 23, 2005, as an example. For the flare of November 9, 2013, it has been established that electrons accelerated at a flare loop top cannot maintain the observed hard X-ray fluxes from the flare footpoints, which indicates that charged particles are additionally accelerated in the chromosphere.

Keywords:
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