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Plasmoid Dominated Magnetic Reconnection and Particle Acceleration

Published online by Cambridge University Press:  20 January 2023

Arghyadeep Paul Open the ORCID record for Arghyadeep Paul [Opens in a new window] ,
Sirsha Nandy  and
Bhargav Vaidya
Arghyadeep Paul
Affiliation:
Dept. of Astronomy Astrophysics and Space Engineering Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India email: arghyadeepp@gmail.com
Sirsha Nandy
Affiliation:
Dept. of Astronomy Astrophysics and Space Engineering Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India email: arghyadeepp@gmail.com
Bhargav Vaidya
Affiliation:
Dept. of Astronomy Astrophysics and Space Engineering Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India email: arghyadeepp@gmail.com
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Abstract

The effect of a parallel velocity shear on the explosive phase of magnetic reconnection in a double tearing mode is investigated within the 2D resistive magneto-hydrodynamic framework. All the systems follow a three phase evolution pattern with the phases delayed in time for an increasing shear speed. We find that the theoretical dependence of the reconnection rate with shear remains true in more general scenarios such as that of a plasmoid dominated double current sheet system. We also find that the power-law distribution of plasmoid sizes become steeper with an increasing sub-Alfvénic shear. We further demonstrate the effect of a velocity shear on acceleration of test particles pertaining to the modification in the energy spectrum.

Keywords

Explosive reconnectionPlasmoidsParticle accelerationDouble Tearing Mode
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S362: The Predictive Power of Computational Astrophysics as a Discovery Tool , June 2020 , pp. 410 - 416
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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