Possible detection of solar gamma-rays by ground-level detectors in solar flares on 2011 March 7

被引：4

作者：

Muraki, Yasushi ^{[1
]}

Valdes-Galicia, Jose F. ^{[2
]}

Xavier Gonzalez, Luis ^{[2
]}

Kamiya, Kohki ^{[3
]}

Katayose, Yusaku ^{[4
]}

Koga, Kiyokazu ^{[3
]}

Matsumoto, Haruhisa ^{[3
]}

Masuda, Satoshi ^{[1
]}

Matsubara, Yutaka ^{[1
]}

Nagai, Yuya ^{[1
]}

Ohnishi, Munehiro ^{[5
]}

Ozawa, Syunsuke ^{[6
]}

Sako, Takashi ^{[1
]}

Shibata, Shoichi ^{[7
]}

Takita, Masato ^{[5
]}

Tanaka, Yasuyuki ^{[8
]}

Tsuchiya, Harufumi ^{[9
]}

Watanabe, Kyoko ^{[10
]}

Zhang, Ji Long ^{[11
]}

机构：

[1] Nagoya Univ, ISEE, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan

[2] Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico

[3] JAXA, Tsukuba Space Ctr, 2-1-1 Sengen, Tsukuba, Ibaraki 3058505, Japan

[4] Yokohama Natl Univ, Phys Dept, Yokohama, Kanagawa 2408501, Japan

[5] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[6] Waseda Univ, Res Inst Sci & Engn, Tokyo 1698555, Japan

[7] Chubu Univ, Engn Sci Lab, Kasugai, Aichi 4870027, Japan

[8] Hiroshima Univ, Dept Phys, Hiroshima 7398526, Japan

[9] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan

[10] Natl Def Acad, Yokosuka, Kanagawa 2398686, Japan

[11] Inst High Energy Phys, 19 Yuquan Rd, Beijing 100049, Peoples R China

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2020年 / 72卷 / 02期

基金：

日本学术振兴会;

关键词：

acceleration of particles; astroparticle physics; gamma-rays; Sun-flares; Sun-X-rays; NEUTRON TELESCOPE; EMISSION;

D O I：

10.1093/pasj/psz141

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

On 2011 March 7, the Solar Neutron Telescope located at Mt. Sierra Negra, Mexico (4600 m) observed enhancements of the counting rate from 19:57 to 20:04 UT with statistical significance 6.8 sigma and from 20:36 to 21:03 UT with 5.8 sigma. One plausible physical explanation for the observation enhancements is that they were produced by solar gamma-rays. The intensities were estimated to be (0.16 +/- 0.03) photons cm(-2) s(-1) for the first flare and (0.22 +/- 0.04) photons cm(-2) S-1 for the second one at the top of the atmosphere. As far as we know, this is the first report on the detection of solar gamma-rays with a ground-based detector. In association with these events, the solar neutron detector Space Environment Data Acquisition Equipment on board the International Space Station registered two solar neutrons with statistical significances of 7.3 sigma and 6.6 sigma. The Large Area Telescope on board the Fermi observatory also observed high-energy gamma-rays from this flare with a statistical significance of 6.7 sigma. In this paper we propose a unified model to explain the production mechanism of high-energy gamma-rays and neutrons in association with this flare.

引用

页数：17

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