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DARK POST-FLARE LOOPS OBSERVED BY THE SOLAR DYNAMICS OBSERVATORY
Song, Qiao; Wang, Jing-Song; Feng, Xueshang; Zhang, Xiaoxin; Song, Q (reprint author), China Meteorol Adm, Natl Ctr Space Weather, Key Lab Space Weather, Beijing 100081, Peoples R China.; Song, Q (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Song, Q (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2016
Volume821Issue:2
ISSN0004-637X
Language英语
KeywordSun: Corona Sun: Flares Sun: Magnetic Fields
AbstractSolar post-flare loops (PFLs) are arcade-like loop systems that appear during the gradual phases of eruptive flares. The extreme ultraviolet (EUV) observations from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO) allow us to investigate the fine structures in PFLs. In this work, we focus on studying the dark post-flare loops (DPFLs) during X-class flares, which are more evident in SDO/AIA data than in previous EUV data. We identify and analyze the DPFLs observed by SDO and find that: (1) the DPFLs of an X5.4 flare have an average lifetime of 10.0 +/- 5.5minutes, an average width of 1022 +/- 339 km, and an average maximum length of 33 +/- 10 Mm, (2) blob-like falling features with a size close to the resolution of SDO/AIA are identified in the DPFLs and have an average velocity of 76 +/- 19 km s(-1), and (3) the average widths of the DPFLs slightly increase with the characteristic temperatures in the AIA 304, 171, 193, and 211 A channels. Our investigation shows that DPFLs are found in all of the 20 cases within this study, which suggests that they are a common phenomenon in X-class flares and are probably produced by the same mechanism that creates coronal rain.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5438
Collection空间科学部
Corresponding AuthorSong, Q (reprint author), China Meteorol Adm, Natl Ctr Space Weather, Key Lab Space Weather, Beijing 100081, Peoples R China.; Song, Q (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Song, Q (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
Recommended Citation
GB/T 7714
Song, Qiao,Wang, Jing-Song,Feng, Xueshang,et al. DARK POST-FLARE LOOPS OBSERVED BY THE SOLAR DYNAMICS OBSERVATORY[J]. ASTROPHYSICAL JOURNAL,2016,821(2).
APA Song, Qiao.,Wang, Jing-Song.,Feng, Xueshang.,Zhang, Xiaoxin.,Song, Q .,...&Song, Q .(2016).DARK POST-FLARE LOOPS OBSERVED BY THE SOLAR DYNAMICS OBSERVATORY.ASTROPHYSICAL JOURNAL,821(2).
MLA Song, Qiao,et al."DARK POST-FLARE LOOPS OBSERVED BY THE SOLAR DYNAMICS OBSERVATORY".ASTROPHYSICAL JOURNAL 821.2(2016).
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