STATISTICS OF FLARING LOOPS OBSERVED BY NOBEYAMA RADIOHELIOGRAPH. II. SPECTRAL EVOLUTION
文献类型：期刊论文
| 作者 | Huang, Guangli1; Nakajima, Hiroshi2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 702期号:1页码:19-26 |
| 关键词 | Sun: flares Sun: radio radiation |
| ISSN号 | 0004-637X |
| 英文摘要 | The spectral evolution of solar microwave bursts is studied in 10 impulsive events with loop-like structures, which are selected in the flare list of Nobeyama Radioheliograph. Most events have a brighter and harder looptop (LT) with maximum time later than at least one of its two footpoints (FPs), and have a common feature of the spectral evolution in the LT and the two FPs. There are five simple impulsive bursts with a well known pattern of soft-hard-soft or soft-hard-harder (SHH). It is first found that the other five events have multiple subpeaks in their impulsive phase, and mostly have a new feature of hard-soft-hard (HSH) in each subpeak, but, the well known tendency of SHH is still maintained in the total spectral evolution of these events. All of these features in the spectral evolution of the 10 selected events are consistent with the full Sun observations of Nobeyama Radio Polarimeters in these events. The new feature of HSH may be explained by the thermal free-free emission before, during, and after these bursts, together with multiple injections of nonthermal electrons, while the SHH pattern in the total duration may be directly caused by the trapping effect. |
| 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] | HARD X-RAY ; SOLAR-FLARE ; PARTICLE-ACCELERATION ; TEMPORAL EVOLUTION ; MICROWAVE ; BURSTS ; EMISSION ; ELECTRONS ; DYNAMICS ; POLARIZATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000269244500002 |
| 公开日期 | 2011-12-08 |
| 源URL | [http://159.226.72.40/handle/332002/1531]  |
| 专题 | 紫金山天文台_太阳活动的多波段观测研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Natl Inst Nat Sci, Natl Astron Observ Japan, Nobeyama Solar Radio Observ, Minamisa Ku, Minamimaki, Nagano 3841305, Japan |
| 推荐引用方式 GB/T 7714 | Huang, Guangli,Nakajima, Hiroshi. STATISTICS OF FLARING LOOPS OBSERVED BY NOBEYAMA RADIOHELIOGRAPH. II. SPECTRAL EVOLUTION[J]. ASTROPHYSICAL JOURNAL,2009,702(1):19-26. |
| APA | Huang, Guangli,&Nakajima, Hiroshi.(2009).STATISTICS OF FLARING LOOPS OBSERVED BY NOBEYAMA RADIOHELIOGRAPH. II. SPECTRAL EVOLUTION.ASTROPHYSICAL JOURNAL,702(1),19-26. |
| MLA | Huang, Guangli,et al."STATISTICS OF FLARING LOOPS OBSERVED BY NOBEYAMA RADIOHELIOGRAPH. II. SPECTRAL EVOLUTION".ASTROPHYSICAL JOURNAL 702.1(2009):19-26. |
入库方式： OAI收割
来源：紫金山天文台
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