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Journal Articles Geophysical Research Letters Year : 2016

Thick escaping magnetospheric ion layer in magnetopause reconnection with MMS observations

T. Nagai
N. Kitamura
  • Function : Author
H. Hasegawa
  • Function : Author
I. Shinohara
S. Yokota
  • Function : Author
Y. Saito
  • Function : Author
R. Nakamura
B. L. Giles
  • Function : Author
C. Pollock
  • Function : Author
T. E. Moore
  • Function : Author
J. C. Dorelli
  • Function : Author
D. J. Gershman
  • Function : Author
W. R. Paterson
  • Function : Author
L. A. Avanov
  • Function : Author
M. O. Chandler
  • Function : Author
V. Coffey
  • Function : Author
C. T. Russell
  • Function : Author
R. J. Strangeway
  • Function : Author
M. Oka
  • Function : Author
K. J. Genestreti
J. L. Burch
  • Function : Author

Abstract

The 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.
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insu-03669490 , version 1 (16-05-2022)

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T. Nagai, N. Kitamura, H. Hasegawa, I. Shinohara, S. Yokota, et al.. Thick escaping magnetospheric ion layer in magnetopause reconnection with MMS observations. Geophysical Research Letters, 2016, 43, pp.6028-6035. ⟨10.1002/2016GL069085⟩. ⟨insu-03669490⟩
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