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Electron Heating at Kinetic Scales in Magnetosheath Turbulence

Authors :
Chasapis, Alexandros
Matthaeus, W. H
Parashar, T. N
Lecontel, O
Retino, A
Breuillard, H
Khotyaintsev, Y
Vaivads, A
Lavraud, B
Eriksson, E
Moore, T. E
Burch, J. L
Torbert, R. B
Lindqvist, P.-A
Ergun, R. E
Marklund, G
Goodrich, K. A
Wilder, F. D
Chutter, M
Needell, J
Rau, D
Dors, I
Russell, C. T
Le, G
Magnes, W
Strangeway, R. J
Bromund, K. R
Leinweber, H. K
Plaschke, F
Fischer, D
Anderson, B. J
Pollock, C. J
Giles, B. L
Paterson, W. R
Dorelli, J
Gershman, D. J
Avanov, L
Saito, Y
Source :
The Astrophysical Journal. 836(247)
Publication Year :
2017
Publisher :
United States: NASA Center for Aerospace Information (CASI), 2017.

Abstract

We present a statistical study of coherent structures at kinetic scales, using data from the Magnetospheric Multiscale mission in the Earths magnetosheath. We implemented the multi-spacecraft partial variance of increments (PVI) technique to detect these structures, which are associated with intermittency at kinetic scales. We examine the properties of the electron heating occurring within such structures. We find that, statistically, structures with a high PVI index are regions of significant electron heating. We also focus on one such structure, a current sheet, which shows some signatures consistent with magnetic reconnection. Strong parallel electron heating coincides with whistler emissions at the edges of the current sheet.

Details

Language :
English
ISSN :
15384357 and 0004637X
Volume :
836
Issue :
247
Database :
NASA Technical Reports
Journal :
The Astrophysical Journal
Notes :
NNX14AC39G, , NSF AGS-146130
Publication Type :
Report
Accession number :
edsnas.20170007784
Document Type :
Report
Full Text :
https://doi.org/10.3847/1538-4357/836/2/247