Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....6.3371t&link_type=abstract
Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I
Physics
Scientific paper
We present examination of the multi-wavelength observation of a M8.2 flare which occurred on 2000 November 25. This flare gives us more detailed pictures of the gradual hard flare amd high energy particles than before the previous studies.We mainly discussed the magnetic trapping effect for them and the spatial distribution and the temporal variation of the indices of the electron energy spectrum inferred from hard X-ray(HXR) and microwave.The main results are as follows. (1) In this flare, the HXR emission is mainly produced by electrons which precipitate into choromosphere after magnetic mirroring in flare loops and their energy is under 1 MeV. (2) The microwave emission at flare loop top is produced by trapped electrons and their energy is over 1 MeV. (3) There are a break in the electron spectral index between lower energy electrons which have over 1 MeV and higher energy ones under 1 MeV, that is, it is possible that the initial acceleration mechanism of their electrons at flare are not same.
Kiyohara Junko
Masuda Sotoshi
Nakajima Hiroshi
Sato Jun Kosugi Takeo
Takasaki Hiroyuki
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