ELEMENTARY ENERGY RELEASE EVENTS IN FLARING LOOPS: EFFECTS OF CHROMOSPHERIC EVAPORATION ON X-RAYS
文献类型：期刊论文
| 作者 | Liu, Siming1 ; Han, Feiran2; Fletcher, Lyndsay1
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2010-01-20 |
| 卷号 | 709期号:1页码:58-66 |
| 关键词 | acceleration of particles plasmas Sun: flares Sun: particle emission turbulence |
| ISSN号 | 0004-637X |
| 英文摘要 | With the elementary energy release events introduced in a previous paper, we model the chromospheric evaporation in flaring loops. The thick-target hard X-ray (HXR) emission produced by electrons escaping from the acceleration region dominates the impulsive phase, and the thin-target emission from the acceleration region dominates the low-energy thermal component in the gradual phase, as observed in early impulsive flares. Quantitative details depend on properties of the thermal background, which leads to variations in the correlation between HXR flux and spectral index. For lower temperature and/or higher density of the background electrons, the HXRs both rise and decay more quickly with a plateau near the peak. The plateau is less prominent at higher energies. Given the complexity of transport of mass, momentum, and energy along loops in the impulsive phase, we propose a strategy to apply this single-zone energy release and electron acceleration model to observations of flares associated with single loops so that the energy release, electron acceleration, and evaporation processes may be studied quantitatively. |
| 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] | IMPULSIVE SOLAR-FLARES ; PARTICLE-ACCELERATION ; ELECTRON ACCELERATION ; SPECTRAL EVOLUTION ; ALFVEN WAVES ; RHESSI ; TURBULENCE ; TRANSPORT ; EMISSION ; BURSTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000273282500006 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1045]  |
| 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.Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Siming,Han, Feiran,Fletcher, Lyndsay. ELEMENTARY ENERGY RELEASE EVENTS IN FLARING LOOPS: EFFECTS OF CHROMOSPHERIC EVAPORATION ON X-RAYS[J]. ASTROPHYSICAL JOURNAL,2010,709(1):58-66. |
| APA | Liu, Siming,Han, Feiran,&Fletcher, Lyndsay.(2010).ELEMENTARY ENERGY RELEASE EVENTS IN FLARING LOOPS: EFFECTS OF CHROMOSPHERIC EVAPORATION ON X-RAYS.ASTROPHYSICAL JOURNAL,709(1),58-66. |
| MLA | Liu, Siming,et al."ELEMENTARY ENERGY RELEASE EVENTS IN FLARING LOOPS: EFFECTS OF CHROMOSPHERIC EVAPORATION ON X-RAYS".ASTROPHYSICAL JOURNAL 709.1(2010):58-66. |
入库方式： OAI收割
来源：紫金山天文台
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