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Thick Escaping Magnetospheric Ion Layer in Magnetopause Reconnection with MMS ObservationsThe structure of asymmetric magnetopause reconnection is explored with multiple point and high-time-resolution ion velocity distribution observations from the Magnetospheric Multiscale mission. On 9 September 2015, reconnection took place at the magnetopause, which separated the magnetosheath and the magnetosphere with a density ratio of 25:2. The magnetic field intensity was rather constant, even higher in the asymptotic magnetosheath. The reconnected field line region had a width of approximately 540 km. In this region, streaming and gyrating ions are discriminated. The large extension of the reconnected field line region toward the magnetosheath can be identified where a thick layer of escaping magnetospheric ions was formed. The scale of the magnetosheath side of the reconnected field line region relative to the scale of its magnetospheric side was 4.5:1.
Document ID
20170003064
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Nagai, T. (Tokyo Institute of Technology Tokyo, Japan)
Kitamura, N. (Japan Aerospace Exploration Agency Sagamihara, Japan)
Hasagawa, H. (Japan Aerospace Exploration Agency Sagamihara, Japan)
Shinohara, I. (Japan Aerospace Exploration Agency Sagamihara, Japan)
Yokota, S. (Japan Aerospace Exploration Agency Sagamihara, Japan)
Saito, Y. (Japan Aerospace Exploration Agency Sagamihara, Japan)
Nakamura, R. (Oesterreichische Akademie der Wissenschaften Innsbruck, Austria)
Giles, B. L. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Pollock, C. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Moore, T. E. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Dorelli, J. C. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Paterson, W. R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Chandler, M. O. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Coffey, V. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
April 6, 2017
Publication Date
June 28, 2016
Publication Information
Publication: Geophysical Research Letters
Volume: 43
Issue: 12
Subject Category
Geophysics
Plasma Physics
Report/Patent Number
GSFC-E-DAA-TN40932
Distribution Limits
Public
Copyright
Other