Different Signatures of Chromospheric Evaporation in Two Solar Flares Observed with IRIS
文献类型：期刊论文
| 作者 | Li,Y.1,2; Ding,M. D.3; Hong,J.3; Li,H.1; Gan,W. Q.1 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 879期号:1 |
| 关键词 | line: profiles Sun: chromosphere Sun: flares Sun: transition region Sun: UV radiation |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab245a |
| 英文摘要 | Abstract We present different signatures of chromospheric evaporation in two solar flares observed by the Interface Region Imaging Spectrograph (IRIS). In the B1.6 flare on 2016 December 6 (SOL2016-12-06T10:40), the transition region Si iv line and the chromospheric C ii and Mg ii lines show blueshifts with low velocities up to 20 km s?1 at the flare loop footpoints in the rise phase, indicative of a gentle chromospheric evaporation. While in the C1.6 flare on 2015 December 19 (SOL2015-12-19T10:51), the Si iv, C ii, and Mg ii lines exhibit redshifts with velocities from several to tens of km s?1 at the footpoints, which might suggest an explosive chromospheric evaporation. Explosive evaporation has been observed in many flares that were captured by IRIS; however, gentle evaporation, especially manifested as blueshifts in the cool Si iv, C ii, and Mg ii lines, has scarcely been reported. Our results bring some new insights into chromospheric evaporation in the IRIS era. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-879-1-AB245A |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/27148]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, People’s Republic of China; yingli@pmo.ac.cn 2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People’s Republic of China 3.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Li,Y.,Ding,M. D.,Hong,J.,et al. Different Signatures of Chromospheric Evaporation in Two Solar Flares Observed with IRIS[J]. The Astrophysical Journal,2019,879(1). |
| APA | Li,Y.,Ding,M. D.,Hong,J.,Li,H.,&Gan,W. Q..(2019).Different Signatures of Chromospheric Evaporation in Two Solar Flares Observed with IRIS.The Astrophysical Journal,879(1). |
| MLA | Li,Y.,et al."Different Signatures of Chromospheric Evaporation in Two Solar Flares Observed with IRIS".The Astrophysical Journal 879.1(2019). |
入库方式： OAI收割
来源：国家天文台
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