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Title:
Observation of solar neutrons associated with the large flare on 1991 June 4
Authors:
Muraki, Y.; Murakami, K.; Miyazaki, M.; Mitsui, K.; Shibata, S.; Sakakibara, S.; Sakai, T.; Takahashi, T.; Yamada, T.; Yamaguchi, K.
Affiliation:
AA(Nagoya Univ., Japan), AB(Nagoya Univ., Japan), AC(Nagoya Univ., Japan), AD(Tokyo Univ., Japan), AE(Nagoya Univ., Japan), AF(Nagoya Univ., Japan), AG(Nihon Univ., Narashino, Japan), AH(Nagoya Univ., Japan), AI(Nagoya Univ., Japan), AJ(National Astronomical Observatory, Mitaka, Japan)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 400, no. 2, p. L75-L78. (ApJL Homepage)
Publication Date:
12/1992
Category:
Solar Physics
Origin:
STI
NASA/STI Keywords:
Solar Flares, Solar Neutrons, Solar X-Rays, Sunspots, Gamma Rays, Interplanetary Magnetic Fields, Muons, Solar Cosmic Rays, Solar Magnetic Field, Solar Observatories
DOI:
10.1086/186653
Bibliographic Code:
1992ApJ...400L..75M

Abstract

Evidence for neutrons coming from the sun associated with a large flare at 03:37 UT on 1991 June 4 is reported. The event was recorded by a neutron telescope, and also by a muon telescope, located at Mount Norikura Cosmic Ray Laboratory (2770 m). The statistical significance of the signal recorded by the neutron telescope is 4.4 sigma for neutron kinetic energies between 50 and 360 MeV in the time interval 03:46-03:49 UT. For the muon telescope the statistical significance of the signal is 4.9 sigma in the time interval 03:47-03:56 UT.

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