Measuring Particle Current Density J on NASA's Magnetospheric Multiscale Mission (MMS)

2021 ◽  
Vol 126 (1) ◽  
Author(s):  
J. D. Scudder
Keyword(s):  
Current Density ◽  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission ◽  
Particle Current

scholarly journals Roles of electrons and ions in formation of the current in mirror-mode structures in the terrestrial plasma sheet: Magnetospheric Multiscale observations

2020 ◽  
Vol 38 (2) ◽  
pp. 309-318 ◽  
Author(s):  
Guoqiang Wang ◽  
Tielong Zhang ◽  
Mingyu Wu ◽  
Daniel Schmid ◽  
Yufei Hao ◽  
...  
Keyword(s):  
Current Density ◽  
Plasma Sheet ◽  
Electron Velocity ◽  
Collective Behaviors ◽  
Ion Drift ◽  
Magnetospheric Multiscale ◽  
Electrons And Ions ◽  
Current Densities ◽  
Mirror Mode ◽  
Magnetospheric Multiscale Mission

Abstract. Mirror-mode structures widely exist in various space plasma environments. Here, we investigate a train of mirror-mode structures in the terrestrial plasma sheet on 11 August 2017 based on the Magnetospheric Multiscale mission. We find that bipolar current densities exist in the cross section of two hole-like mirror-mode structures, referred to as magnetic dips. The bipolar current density in the magnetic dip with a size of ∼2.2 ρi (the ion gyro radius) is mainly contributed by variations of the electron velocity, which is mainly formed by the magnetic gradient–curvature drift. For another magnetic dip with a size of ∼6.6 ρi, the bipolar current density is mainly caused by an ion bipolar velocity, which can be explained by the collective behaviors of the ion drift motions. The current density inside the mirror dip contributes to the maintenance of the hole-like structure's stable. Our observations suggest that the electrons and ions play different roles in the formation of currents in magnetic dips with different sizes.

scholarly journals The geometric factor of electrostatic plasma analyzers: A case study from the Fast Plasma Investigation for the Magnetospheric Multiscale mission

2012 ◽  
Vol 83 (3) ◽  
pp. 033303 ◽  
Author(s):  
Glyn A. Collinson ◽  
John C. Dorelli ◽  
Levon A. Avanov ◽  
Gethyn R. Lewis ◽  
Thomas E. Moore ◽  
...  
Keyword(s):  
Geometric Factor ◽  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission ◽  
Plasma Investigation

New Insights into the Nature of Turbulence in the Earth's Magnetosheath Using Magnetospheric MultiScale Mission Data

2018 ◽  
Vol 859 (2) ◽  
pp. 127 ◽  
Author(s):  
H. Breuillard ◽  
L. Matteini ◽  
M. R. Argall ◽  
F. Sahraoui ◽  
M. Andriopoulou ◽  
...  
Keyword(s):  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission

scholarly journals Mechanism of Reconnection on Kinetic Scales Based on Magnetospheric Multiscale Mission Observations

2019 ◽  
Vol 885 (1) ◽  
pp. L26 ◽  
Author(s):  
W. M. Macek ◽  
M. V. D. Silveira ◽  
D. G. Sibeck ◽  
B. L. Giles ◽  
J. L. Burch
Keyword(s):  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission

scholarly journals Magnetospheric Multiscale Mission Observations of Reconnecting Electric Fields in the Magnetotail on Kinetic Scales

2019 ◽  
Vol 46 (17-18) ◽  
pp. 10295-10302 ◽  
Author(s):  
W. M. Macek ◽  
M. V. D. Silveira ◽  
D. G. Sibeck ◽  
B. L. Giles ◽  
J. L. Burch
Keyword(s):  
Electric Fields ◽  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission

scholarly journals Theory and Modeling for the Magnetospheric Multiscale Mission

2014 ◽  
Vol 199 (1-4) ◽  
pp. 577-630 ◽  
Author(s):  
M. Hesse ◽  
N. Aunai ◽  
J. Birn ◽  
P. Cassak ◽  
R. E. Denton ◽  
...  
Keyword(s):  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission ◽  
Theory And Modeling
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