On the origin of subsecond pulses at 17 GHz

被引：18

作者：

Altyntsev, AT

Nakajima, H

Takano, T

Rudenko, GV

机构：

[1] Inst Solar Terr Phys, Irkutsk 664033, Russia

[2] NAOJ, Nobeyama Radio Observ, Minamisa Ku, Nagano 38413, Japan

[3] Chiba Univ, Dept Nat Sci, Chiba, Japan

来源：

SOLAR PHYSICS | 2000年 / 195卷 / 02期

关键词：

D O I：

10.1023/A:1005252104898

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have analyzed three flare events with subsecond structures in hard X-rays (CGRO/ BATSE) and 17 GHz data (Nobeyama radioheliograph). It was shown that microwave subsecond brightenings (SSB) were generated by directly precipitating electrons with energy of 100-200 keV from tiny regions close to footpoints. In two events, when high correlation between microwaves and X-rays was observed, the SSB can be interpreted in terms of gyrosynchrotron emission. Plasma emission seems to be a more credible explanation of the spontaneous pulses in the event when poor correlation with X-rays was observed.

引用

页码：401 / 420

页数：20

共 34 条

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