Chen, J., Pevtsov, A.A., Su, J. et al. (4 more authors) (2020) Formation of two homologous transequatorial loops. Solar Physics, 295 (4). 59. ISSN 0038-0938
Abstract
The formation mechanism of two homologous transequatorial loops (TLs) of July 7–8, 1999 (SOL1999-07-07) is studied. The TLs connected active region AR 8614 from the northern hemisphere to AR 8626 in the southern hemisphere. The first TL appeared as a distinct structure at 12:49 UT on July 7, the second TL appeared at 06:21 UT, on July 8. Important results are obtained in this analysis: (i) The configuration of the two TLs is similar in X-rays. (ii) The sizes of the two active regions related to the TLs increased before and during the formation of the two TLs, this induced the expansion of their coronal loops. (iii) Both TLs formed globally on a time scale shorter than 110 min (time resolution of observations). (iv) An X-shaped coronal structure was observed. This observational evidence suggests that the two TLs formed by the same physical mechanism, magnetic reconnection, between the two expanding magnetic configurations of the two ARs.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Springer Nature B.V. 2020. This is an author-produced version of a paper subsequently published in Solar Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Solar activity; Coronal loops; Magnetic fields; Magnetic reconnection; Chromospheric evaporation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/M000826/1 ROYAL SOCIETY IE161153 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 30 Apr 2020 12:28 |
Last Modified: | 22 Apr 2021 00:38 |
Status: | Published |
Publisher: | Springer Verlag |
Refereed: | Yes |
Identification Number: | 10.1007/s11207-020-01625-z |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160097 |