An Intriguing Solar Microflare Observed with RHESSI, Hinode and TRACE

Details An Intriguing Solar Microflare Observed with RHESSI, Hinode and TRACE An Intriguing Solar Microflare Observed with RHESSI, Hinode and TRACE

2007-12-03

arxiv.org/abs/0712.0369v1

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures, accepted by A&A

Scientific paper

10.1051/0004-6361:20079019

Investigate particle acceleration and heating in a solar microflare. In a microflare with non-thermal emission to remarkably high energies ($>50$ keV), we investigate the hard X-rays with RHESSI imaging and spectroscopy and the resulting thermal emission seen in soft X-rays with Hinode/XRT and in EUV with TRACE. The non-thermal footpoints observed with RHESSI spatially and temporally match bright footpoint emission in soft X-rays and EUV. There is the possibility that the non-thermal spectrum extends down to 4 keV. The hard X-ray burst clearly does not follow the expected Neupert effect, with the time integrated hard X-rays not matching the soft X-ray time profile. So although this is a simple microflare with good X-ray observation coverage it does not fit the standard flare model.

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