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A first-principle model for polarization swings during reconnection-powered flares

Abstract:

We show that magnetic reconnection in a magnetically dominated fast-cooling plasma can naturally produce bright flares accompanied by rotations in the synchrotron polarization vector. With particle-in-cell simulations of reconnection, we find that flares are powered by efficient particle acceleration at the interface of merging magnetic flux ropes, or "plasmoids." The accelerated particles stream through the post-merger plasmoid toward the observer, thus progressively illuminating regions wit...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.3847/2041-8213/abafa6

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Oxford college:
Merton College
Role:
Author
ORCID:
0000-0002-7958-6993
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Role:
Author
ORCID:
0000-0002-5951-0756
Publisher:
IOP Publishing
Journal:
Astrophysical Journal Letters More from this journal
Volume:
900
Issue:
2
Pages:
L23-L23
Publication date:
2020-09-04
Acceptance date:
2020-08-14
DOI:
EISSN:
2041-8213
ISSN:
2041-8205
Language:
English
Keywords:
Pubs id:
1132739
Local pid:
pubs:1132739
Deposit date:
2020-09-18

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