热门
EXPLOSIVE CHROMOSPHERIC EVAPORATION IN A CIRCULAR-RIBBON FLARE
文献类型：期刊论文
| 作者 | Zhang, Q. M.1,2; Li, D.1 ; Ning, Z. J.1; Su, Y. N.1; Ji, H. S.1; Guo, Y.3,4
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2016-08-10 |
| 卷号 | 827期号:1 |
| 关键词 | Sun: chromosphere Sun: corona Sun: flares Sun: X-rays, gamma-rays techniques: spectroscopic |
| 英文摘要 | In this paper, we report our multiwavelength observations of the C4.2 circular-ribbon flare in active region (AR) 12434 on 2015 October 16. The short-lived flare was associated with positive magnetic polarities and a negative polarity inside, as revealed by the photospheric line-of-sight magnetograms. Such a magnetic pattern is strongly indicative of a magnetic null point and spine-fan configuration in the corona. The flare was triggered by the eruption of a mini-filament residing in the AR, which produced the inner flare ribbon (IFR) and the southern part of a closed circular flare ribbon (CFR). When the eruptive filament reached the null point, it triggered null point magnetic reconnection with the ambient open field and generated the bright CFR and a blowout jet. Raster observations of the Interface Region Imaging Spectrograph show plasma upflow at speeds of 35-120 km s(-1) in the Fe XXI lambda 1354.09 line (log T approximate to 7.05) and downflow at speeds of 10-60 km s(-1) in the Si IV lambda 1393.77 line (log T approximate to 4.8) at certain locations of the CFR and IFR during the impulsive phase of the flare, indicating explosive chromospheric evaporation. Coincidence of the single hard X-ray source at 12-25 keV with the IFR and calculation based on the thick-target model suggest that the explosive evaporation was most probably driven by nonthermal electrons. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | LOOP RADIATIVE HYDRODYNAMICS ; X-RAY JETS ; SOLAR-FLARE ; MAGNETIC RECONNECTION ; MAGNETOHYDRODYNAMIC SIMULATION ; MULTIWAVELENGTH OBSERVATIONS ; OBSERVATIONAL EVIDENCE ; PARTICLE-ACCELERATION ; NONTHERMAL ELECTRONS ; EXTREME-ULTRAVIOLET |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382009500027 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5270]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 3.Katholieke Univ Leuven, Dept Math, Ctr Math Plasma Astrophys, B-3001 Leuven, Belgium 4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Q. M.,Li, D.,Ning, Z. J.,et al. EXPLOSIVE CHROMOSPHERIC EVAPORATION IN A CIRCULAR-RIBBON FLARE[J]. ASTROPHYSICAL JOURNAL,2016,827(1). |
| APA | Zhang, Q. M.,Li, D.,Ning, Z. J.,Su, Y. N.,Ji, H. S.,&Guo, Y..(2016).EXPLOSIVE CHROMOSPHERIC EVAPORATION IN A CIRCULAR-RIBBON FLARE.ASTROPHYSICAL JOURNAL,827(1). |
| MLA | Zhang, Q. M.,et al."EXPLOSIVE CHROMOSPHERIC EVAPORATION IN A CIRCULAR-RIBBON FLARE".ASTROPHYSICAL JOURNAL 827.1(2016). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。