On the production of highest energy solar protons at 20 January 2005

被引：20
作者：
Bostanjyan, N. Kh. [1 ]
Chilingarian, A. A. [1 ]
Eganov, V. S. [1 ]
Karapetyan, G. G. [1 ]
机构：
[1] Alikhanyan Phys Inst, Cosmic Ray Div, Yerevan 36, Armenia
来源：
ADVANCES IN SPACE RESEARCH | 2007年 / 39卷 / 09期
关键词：
solar cosmic rays; ground level enhancement; particle detectors;
D O I：
10.1016/j.asr.2007.03.024
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
On January 20, 2005, 7:02-7:05 UT the Aragats Multidirectional Muon Monitor (AMMM) located at 3200 m a.s.l. registered enhancement of the high energy secondary muon flux (threshold similar to 5 GeV). The enhancement, lasting for 3 min, has statistical significance of similar to 4 sigma and is related to the X7.1 flare seen by the GOES, and very fast (>2500 km/s) CME seen by SOHO, and the Ground Level Enhancements (GLE) #69 detected by the world-wide network of neutron monitors and muon detectors. The energetic and temporal characteristics of the muon signal from the AMMM are compared with the characteristics of other monitors located at the Aragats Space-Environmental Center (ASEC) and with other neutron and muon detectors. Since secondary muons with energies >5 GeV are corresponding to solar proton primaries with energies 20-30 GeV we conclude that in the episode of the particle acceleration at 7:027:05 UT 20 January 2005 solar protons were accelerated up to energies in excess of 20 GeV. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1454 / 1457
页数：4
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