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Coronal Condensations Caused by Magnetic Reconnection between Solar Coronal Loops

文献类型：期刊论文

作者Li, Leping1,2,3,4; Zhang, Jun1,4; Peter, Hardi5; Chitta, Lakshmi Pradeep5; Su, Jiangtao1,4; Xia, Chun6,7; Song, Hongqiang2,3; Hou, Yijun1,4
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2018-09-01
卷号864期号:1页码:7
关键词magnetic fields magnetic reconnection plasmas Sun: corona Sun: UV radiation
ISSN号2041-8205
DOI10.3847/2041-8213/aad90a
英文摘要Employing Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA) multi-wavelength images, we report the coronal condensation during the magnetic reconnection (MR) between a system of open and closed coronal loops. Higher-lying magnetically open structures, observed in AIA 171 angstrom. images above the solar limb, move downward and interact with the lower-lying closed loops, resulting in the formation of dips in the former. An X-type structure forms at the interface. The interacting loops reconnect and disappear. Two sets of newly reconnected loops then form and recede from the MR region. During the MR process, bright emission appears sequentially in the AIA 131 and 304 angstrom. channels repeatedly in the dips of higher-lying open structures. This indicates the cooling and condensation process of hotter plasma from similar to 0.9 MK down to similar to 0.6 MK, and then to similar to 0.05 MK, also supported by the light curves of the AIA 171, 131, and 304 angstrom. channels. The part of higher-lying open structures supporting the condensation participate in the successive MR. Without support from underlying loops, the condensation then rains back to the solar surface along the newly reconnected loops. Our results suggest that the MR between coronal loops leads to the condensation of hotter coronal plasma and its downflows. MR thus plays an active role in the mass cycle of coronal plasma because it can initiate the catastrophic cooling and condensation. This underlines that the magnetic and thermal evolution has to be treated together and cannot be separated, even in the case of catastrophic cooling.
WOS关键词FLUX ROPE ERUPTION ; CURRENT SHEET ; SUPRA-ARCADE ; FLARE ; PROMINENCES ; DYNAMICS ; FILAMENT ; MODELS ; FIELDS
资助项目National Foundations of China[11673034] ; National Foundations of China[11533008] ; National Foundations of China[11790304] ; National Foundations of China[11773039] ; Chinese Academy of Sciences[QYZDJ-SSW-SLH050] ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant[707837] ; Specialized Research Fund for Shandong Provincial Key Laboratory
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000442677000002
出版者IOP PUBLISHING LTD
资助机构National Foundations of China ; National Foundations of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; Specialized Research Fund for Shandong Provincial Key Laboratory ; Specialized Research Fund for Shandong Provincial Key Laboratory ; National Foundations of China ; National Foundations of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; Specialized Research Fund for Shandong Provincial Key Laboratory ; Specialized Research Fund for Shandong Provincial Key Laboratory ; National Foundations of China ; National Foundations of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; Specialized Research Fund for Shandong Provincial Key Laboratory ; Specialized Research Fund for Shandong Provincial Key Laboratory ; National Foundations of China ; National Foundations of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant ; Specialized Research Fund for Shandong Provincial Key Laboratory ; Specialized Research Fund for Shandong Provincial Key Laboratory
源URL[http://ir.bao.ac.cn/handle/114a11/22530]  
专题中国科学院国家天文台
通讯作者Li, Leping
作者单位1.Chinese Acad Sci, CAS Key Lab Solar Act, Natl Astron Observ, Beijing 100101, Peoples R China
2.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China
3.Shandong Univ, Inst Space Sci, Weihai 264209, Shandong, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Max Planck Inst Solar Syst Res, D-37077 Gottingen, Germany
6.Yunnan Univ, Sch Phys & Astron, Kunming 650050, Yunnan, Peoples R China
7.Katholieke Univ Leuven, Dept Math, Ctr Math Plasma Astrophys, Celestijnenelaan 200B, B-3001 Leuven, Belgium
推荐引用方式
GB/T 7714		 Li, Leping,Zhang, Jun,Peter, Hardi,et al. Coronal Condensations Caused by Magnetic Reconnection between Solar Coronal Loops[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,864(1):7.
APA Li, Leping.,Zhang, Jun.,Peter, Hardi.,Chitta, Lakshmi Pradeep.,Su, Jiangtao.,...&Hou, Yijun.(2018).Coronal Condensations Caused by Magnetic Reconnection between Solar Coronal Loops.ASTROPHYSICAL JOURNAL LETTERS,864(1),7.
MLA Li, Leping,et al."Coronal Condensations Caused by Magnetic Reconnection between Solar Coronal Loops".ASTROPHYSICAL JOURNAL LETTERS 864.1(2018):7.

入库方式： OAI收割

来源：国家天文台

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