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Title: Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail

Abstract

Here, we present the first statistical study of magnetic structures and associated energy dissipation observed during a single period of turbulent magnetic reconnection, by using the in situ measurements of the Magnetospheric Multiscale mission in the Earth's magnetotail on 26 July 2017. The structures are selected by identifying a bipolar signature in the magnetic field and categorized as plasmoids or current sheets via an automated algorithm which examines current density and plasma flow. The size of the plasmoids forms a decaying exponential distribution ranging from subelectron up to ion scales. The presence of substantial number of current sheets is consistent with a physical picture of dynamic production and merging of plasmoids during turbulent reconnection. The magnetic structures are locations of significant energy dissipation via electric field parallel to the local magnetic field, while dissipation via perpendicular electric field dominates outside of the structures. Significant energy also returns from particles to fields.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Princeton Univ., NJ (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. Univ. of Colorado, Boulder, CO (United States)
  4. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Aeronautic and Space Administration (NASA); National Science Foundation (NSF)
OSTI Identifier:
1668046
Grant/Contract Number:  
AC02-09CH11466; DGE‐2039656; NNH15AB29I
Resource Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 47; Journal Issue: 19; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
magnetotail; plasmoids; reconnection; turbulence

Citation Formats

Bergstedt, K., Ji, H., Jara‐Almonte, J., Yoo, J., Ergun, R. E., and Chen, L. ‐J. Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail. United States: N. p., 2020. Web. doi:10.1029/2020gl088540.
Bergstedt, K., Ji, H., Jara‐Almonte, J., Yoo, J., Ergun, R. E., & Chen, L. ‐J. Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail. United States. doi:10.1029/2020gl088540.
Bergstedt, K., Ji, H., Jara‐Almonte, J., Yoo, J., Ergun, R. E., and Chen, L. ‐J. Mon . "Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail". United States. doi:10.1029/2020gl088540.
@article{osti_1668046,
title = {Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail},
author = {Bergstedt, K. and Ji, H. and Jara‐Almonte, J. and Yoo, J. and Ergun, R. E. and Chen, L. ‐J.},
abstractNote = {Here, we present the first statistical study of magnetic structures and associated energy dissipation observed during a single period of turbulent magnetic reconnection, by using the in situ measurements of the Magnetospheric Multiscale mission in the Earth's magnetotail on 26 July 2017. The structures are selected by identifying a bipolar signature in the magnetic field and categorized as plasmoids or current sheets via an automated algorithm which examines current density and plasma flow. The size of the plasmoids forms a decaying exponential distribution ranging from subelectron up to ion scales. The presence of substantial number of current sheets is consistent with a physical picture of dynamic production and merging of plasmoids during turbulent reconnection. The magnetic structures are locations of significant energy dissipation via electric field parallel to the local magnetic field, while dissipation via perpendicular electric field dominates outside of the structures. Significant energy also returns from particles to fields.},
doi = {10.1029/2020gl088540},
journal = {Geophysical Research Letters},
number = 19,
volume = 47,
place = {United States},
year = {2020},
month = {9}
}

Journal Article:
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