Energetic proton spectra in the 11 June 1991 solar flare

被引:0
|
作者
Young, CA [1 ]
Bennett, K [1 ]
Connors, A [1 ]
Diehl, R [1 ]
McConnell, M [1 ]
Rank, G [1 ]
Ryan, JM [1 ]
Suleiman, R [1 ]
Schönfelder, V [1 ]
Winkler, C [1 ]
机构
[1] Goddard Space Flight Ctr, EmergentIT Inc, Greenbelt, MD USA
来源
GAMMA 2001 | 2001年 / 587卷
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中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The June 11,1991 gamma-ray flare seen by the Compton Gamma-ray Observatory (CGRO) displays several features that make it a dynamic and rich event. It is a member of a class of long duration gamma-ray events with both 2.223 MeV and greater than 8 MeV emission for hours after the impulsive phase. It also contains an inter-phase between the impulsive and extended phases that presents a challenge to the standard gamma-ray line (GRL) flare picture. This phase has strong 2.223 MeV emission and relatively weak 4.44 MeV emission indicative of a very hard parent proton spectrum. However, this would indicate emission greater than 8 MeV, which is absent from this period. We present the application of new spectroscopy techniques to this phase of the flare in order to present a reasonable explanation for this seemly inconsistent picture.
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页码:623 / 627
页数:3
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