First Determination in the Extended Corona of the 2D Thermal Evolution of a Current Sheet after a Solar Eruption
文献类型：期刊论文
| 作者 | Bemporad, Alessandro12,16; Shi, Guanglu6,16; Li, Shuting6,16; Ying, Beili6,16; Feng, Li6,16; Lin J(林隽)5 ; Abbo, Lucia12; Andretta, Vincenzo4; Burtovoi, Aleksandr3; Deppo, Vania Da2
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2024-03-01 |
| 卷号 | 964期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad2516 |
| 产权排序 | 第4完成单位 |
| 文献子类 | Article |
| 英文摘要 | For the first time the evolution of the coronal reconfiguration after a coronal mass ejection (CME) was observed by the multichannel Metis Coronagraph on board the ESA-Solar Orbiter mission. The images acquired in visible light (VL) between 3.0 and 5.4 R circle dot show the formation after a CME of a bright elongated radial feature interpreted as a post-CME current sheet (CS). The unique combination of VL and UV images allowed the time evolution of multiple plasma physical parameters inside and outside the CS region to be mapped in 2D for the first time. The CS electron temperature reached peak values higher than 1 MK, more than twice as high as the surrounding corona. An elongated vertical diffusion region, characterized as a region of much higher thermal pressure and lower magnetic pressure, is observed to slowly propagate outward during 13 hr of observations. Inside this region the Alfvenic Mach number is of the order of M A similar or equal to 0.02-0.11, the plasma beta is close to unity, and the level of turbulence is higher than in the surrounding corona, but decreases slowly with time. All these results provide one of the most complete pictures of these features, and support the idea of a magnetic reconnection coupled with turbulence, thus allowing significant heating of the local plasma, despite the weakness of involved coronal magnetic fields in the considered altitude range. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | X-RAY-EMISSION ; MASS EJECTION ; WHITE-LIGHT ; MAGNETIC RECONNECTION ; SPECTROSCOPIC OBSERVATIONS ; NUMERICAL EXPERIMENTS ; ACCELERATION REGION ; ELECTRON-DENSITY ; ULTRAVIOLET ; FLARE |
| 资助项目 | National Key Research and Development Program of China[2022YFF0503804]; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDA17040507]; NSFC[11933009]; NSFC[11973012]; NSFC[11921003]; NSFC[12203102]; Yunling Scholar Project of the Yunnan Province; Yunnan Province Scientist Workshop of Solar Physics; National Key R&D Program of China[2022YFF0503003]; National Key R&D Program of China[2022YFF0503000]; Foreign Expert Project of the Ministry of Science and Technology of the People's Republic of China[G2022055004L]; ESA Space Weather Service Network-SWESNET[68721/54.61] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001187900700001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key Research and Development Program of China[2022YFF0503804] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDA17040507] ; NSFC[11933009, 11973012, 11921003, 12203102] ; Yunling Scholar Project of the Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; National Key R&D Program of China[2022YFF0503003, 2022YFF0503000] ; Foreign Expert Project of the Ministry of Science and Technology of the People's Republic of China[G2022055004L] ; ESA Space Weather Service Network-SWESNET[68721/54.61] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/26748]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.INAF—IASF, Milano, Italy 2.CNR—Istituto di Fotonica e Nanotecnologie, Padova, Italy; 3.INAF—Osservatorio Astrofisico di Arcetri, Firenze, Italy; 4.INAF—Osservatorio Astronomico di Capodimonte, Napoli, Italy; 5.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650216, People's Republic of China; 6.School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China; 7.Dip. di Scienze Pure e Applicate, Università di Urbino, Urbino, Italy; 8.INFN, Sezione di Firenze, Italy; 9.INAF—Osservatorio Astronomico di Trieste, Trieste, Italy; 10.Università di Padova—Dip. Fisica e Astronomia "Galileo Galilei," Padova, Italy; |
| 推荐引用方式 GB/T 7714 | Bemporad, Alessandro,Shi, Guanglu,Li, Shuting,et al. First Determination in the Extended Corona of the 2D Thermal Evolution of a Current Sheet after a Solar Eruption[J]. ASTROPHYSICAL JOURNAL,2024,964(1). |
| APA | Bemporad, Alessandro.,Shi, Guanglu.,Li, Shuting.,Ying, Beili.,Feng, Li.,...&Uslenghi, Michela.(2024).First Determination in the Extended Corona of the 2D Thermal Evolution of a Current Sheet after a Solar Eruption.ASTROPHYSICAL JOURNAL,964(1). |
| MLA | Bemporad, Alessandro,et al."First Determination in the Extended Corona of the 2D Thermal Evolution of a Current Sheet after a Solar Eruption".ASTROPHYSICAL JOURNAL 964.1(2024). |
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来源：云南天文台
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