On the lower energy cutoff of nonthermal electrons in solar flares
文献类型：期刊论文
| 作者 | Gan, WQ ; Li, YP; Chang, J
|
| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2001-10-01 |
| 卷号 | 1期号:5页码:453-459 |
| 关键词 | Sun : hard X-rays Sun : gamma-rays Sun : flares Sun : particles |
| ISSN号 | 1009-9271 |
| 英文摘要 | A quantitative method to determine the lower energy cutoff (E,) of power-law electron beams is established. We apply this method to the 54 hard X-ray events observed with BATSE/Compton Gamma Ray Observatory (CGRO). The results show that about 75% of the observed broken double power-law spectra of hard X-rays can be explained by a lower energy cutoff in the power-law electron beams. The values of E,, varying among the flares, are all greater than the usually accepted 20 keV! On average, E-c is about 69 keV. So high a lower energy cutoff of nonthermal electrons implies that nonthermal electrons might not be as important in powering solar flares as was previously thought. Further significance of this finding is discussed. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | X-RAY OBSERVATIONS ; CHROMOSPHERIC CONDENSATION ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000172419200009 |
| 公开日期 | 2013-01-31 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/8194]  |
| 专题 | 紫金山天文台_太阳高能及相关物理过程研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gan, WQ,Li, YP,Chang, J. On the lower energy cutoff of nonthermal electrons in solar flares[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2001,1(5):453-459. |
| APA | Gan, WQ,Li, YP,&Chang, J.(2001).On the lower energy cutoff of nonthermal electrons in solar flares.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,1(5),453-459. |
| MLA | Gan, WQ,et al."On the lower energy cutoff of nonthermal electrons in solar flares".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 1.5(2001):453-459. |
入库方式： OAI收割
来源：紫金山天文台
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