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Fast Ion Heating in Transient Collisionless Magnetic Reconnection via an Intrinsic Stochastic Mechanism

Yoon, Young Dae and Bellan, Paul M. (2018) Fast Ion Heating in Transient Collisionless Magnetic Reconnection via an Intrinsic Stochastic Mechanism. Astrophysical Journal Letters, 868 (2). Art. No. L31. ISSN 2041-8213. http://resolver.caltech.edu/CaltechAUTHORS:20181126-104740980

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Abstract

Stochastic heating has been known to be a powerful ion heating mechanism in the solar wind, atmosphere, and flares. In this Letter, we show that stochastic ion heating is inherent to transient collisionless magnetic reconnection. The explanation exploits the connected nature of electron canonical vorticity to show analytically that the in-plane electric and magnetic fields in a typical reconnection geometry satisfy the condition for stochastic heating of ions. Electron fluid simulations, test ion simulations, and comparisons to experiments all support the existence of this mechanism.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/2041-8213/aaf0a3DOIArticle
ORCID:
AuthorORCID
Yoon, Young Dae0000-0001-8394-2076
Bellan, Paul M.0000-0002-0886-8782
Additional Information:© 2018 The American Astronomical Society. Received 2018 October 11; revised 2018 October 31; accepted 2018 November 13; published 2018 November 26. This material is based upon work supported by the U.S. Department of Energy Office of Science, Office of Fusion Energy Sciences under award No. DE-FG02-04ER54755 and by the Air Force Office of Scientific Research under award No. FA9550-17-1-0023.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-04ER54755
Air Force Office of Scientific Research (AFOSR)FA9550-17-1-0023
Subject Keywords:magnetic reconnection – plasmas – Sun: corona – Sun: flares – Sun: magnetic fields
Record Number:CaltechAUTHORS:20181126-104740980
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181126-104740980
Official Citation:Young Dae Yoon and Paul M. Bellan 2018 ApJL 868 L31
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91163
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Nov 2018 18:53
Last Modified:26 Nov 2018 18:53

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