Statistical Survey of Collisionless Dissipation in the Terrestrial Magnetosheath

Wang，Yanwen1; Bandyopadhyay，Riddhi2; Chhiber，Rohit1,3; Matthaeus，William H.1; Chasapis，Alexandros4; Yang，Yan5; Wilder，Frederick D.6; Gershman，Daniel J.3; Giles，Barbara L.3; Pollock，Craig J.7; Dorelli，John3; Russell，Christopher T.8; Strangeway，Robert J.8; Torbert，Roy T.9; Moore，Thomas E.3; Burch，James L.10

2021-06-01

10.1029/2020JA029000

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   影响因子和分区

2169-9380

2169-9402

Kinetic dissipation of turbulence is an important physical process occurring in collisionless plasmas. Using in-situ data from the Magnetospheric Multiscale (MMS) Mission, we investigate the statistical distribution of kinetic dissipation in the terrestrial magnetosheath. We make use of an analysis of the Vlasov–Maxwell equations that provides a general description of transfer of internal energy, fluid-flow energy, and electromagnetic energy in collisionless plasma, including both spatial transport and conversion between forms. In particular, we focus on the channels that separately produce proton and electron internal energies. Applying those results to MMS burst-mode data obtained in the weakly collisional, turbulent magnetosheath plasma, it is possible to quantify contributions to dissipation from the compressive pressure-dilatation channel, and from the incompressive pressure-strain channel, for both plasma species. We also employ a simple spatial filtering approach as a first step to quantifying plasma heating at large and small scales. The analysis is carried out for 50 selected turbulent data intervals, and statistical distributions of the results are presented.

lengthscales observations similarity solar wind

SCI

英语

其他

WOS:000675837200013

SPACE SCIENCE

2-s2.0-85110782033

Scopus

1.Department of Physics and Astronomy,University of Delaware,Newark,United States
2.Department of Astrophysical Sciences,Princeton University,Princeton,United States
3.Heliophysics Science Division,NASA GSFC,Greenbelt,United States
4.Laboratory for Astrophysics and Space Physics,University of Colorado,Boulder,United States
5.Southern University of Science and Technology,Shenzhen,China
6.University of Texas,Arlington,United States
7.Denali Scientific,Fairbanks,United States
8.University of California,Los Angeles,United States
9.University of New Hampshire,Durham,United States
10.Southwest Research Institute,San Antonio,United States

Wang，Yanwen,Bandyopadhyay，Riddhi,Chhiber，Rohit,et al. Statistical Survey of Collisionless Dissipation in the Terrestrial Magnetosheath[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2021,126(6).

Wang，Yanwen.,Bandyopadhyay，Riddhi.,Chhiber，Rohit.,Matthaeus，William H..,Chasapis，Alexandros.,...&Burch，James L..(2021).Statistical Survey of Collisionless Dissipation in the Terrestrial Magnetosheath.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,126(6).

Wang，Yanwen,et al."Statistical Survey of Collisionless Dissipation in the Terrestrial Magnetosheath".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126.6(2021).