Magnetic reconnection rate and spectral index for two double-ribbon flares | |
Ning, Zongjun![]() | |
刊名 | ASTROPHYSICS AND SPACE SCIENCE
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2008-04-01 | |
卷号 | 314期号:1-3页码:137-143 |
关键词 | sun : flares sun : UV radiation sun : X-rays sun : gamma-rays |
ISSN号 | 0004-640X |
英文摘要 | We explore the correlations between the inferred reconnection rate and hard X-ray spectral hardness for two double-ribbon flares on 2003 November 1 and 2005 May 17 in this paper. The magnetic reconnection rate of phi(rec) is derived from the time rate of change of the product between the normal magnetic field and the newly brightened ribbon area of TRACE 1600 angstrom observations. And the spectral index of gamma is derived from RHESSI hard X-ray data. Both events show a soft-hard-soft spectral behaviour in the rise-peak-decay phases. An anti-correlated behaviour is found between the time evolution of reconnection rate and spectral index. From the regression analysis, we obtain a negative power-law dependence and quantify the relationship between these two quantities. This is consistent with the simulation results before, and further confirms the importance of magnetic reconnection for the electron acceleration in solar flares. |
学科主题 | Astronomy & Astrophysics |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Astronomy & Astrophysics |
研究领域[WOS] | Astronomy & Astrophysics |
关键词[WOS] | X-RAY-EMISSION ; SOLAR-FLARE ; CURRENT SHEETS ; ACCELERATION ; EVOLUTION ; MICROWAVE ; ELECTRONS ; BURSTS ; RHESSI ; MOTION |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000254452300020 |
公开日期 | 2011-12-30 |
内容类型 | 期刊论文 |
源URL | [http://159.226.72.40/handle/332002/2031] ![]() |
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 | Purple Mt Observ, Nanjing 210008, Peoples R China |
推荐引用方式 GB/T 7714 | Ning, Zongjun. Magnetic reconnection rate and spectral index for two double-ribbon flares[J]. ASTROPHYSICS AND SPACE SCIENCE,2008,314(1-3):137-143. |
APA | Ning, Zongjun.(2008).Magnetic reconnection rate and spectral index for two double-ribbon flares.ASTROPHYSICS AND SPACE SCIENCE,314(1-3),137-143. |
MLA | Ning, Zongjun."Magnetic reconnection rate and spectral index for two double-ribbon flares".ASTROPHYSICS AND SPACE SCIENCE 314.1-3(2008):137-143. |
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