Physics
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994kofu.symp..405s&link_type=abstract
In: Proceedings of Kofu Symposium, Kofu, Japan, Sept. 6-10, 1993, p.405-408.
Physics
Scientific paper
In order to explain the neutron monitor data during the 1991 June 4 X12.0 solar flare we have to consider two long duration ejection periods of high energy neutrons, starting approximately at 03:37 and 04:12 UT. The existence of a second acceleration episode separated by about 30 minutes from the impulsive phase of the flare is supported by the gamma-ray and microwave observations. Assuming that the total number of neutrons in 0.1-3 GeV energy range is proportional to the gamma-line intensity, estimations of neutron spectra can be made during the first production episode where the gamma-ray data are available. But we have to use the similarity between the general trends of microwave and high-energy gamma emission to obtain the neutron spectrum during the second production episode. The spectrum during the first ejection have appeared to be softer than that of the second ejection.
Matsuoka Masaru
Struminsky Alexei
Takahashi Keitaro
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