In-situ observation of Hall Magnetohydrodynamic Cascade in Space Plasma
We present estimates of the turbulent energy cascade rate, derived from a Hall-MHD third-order law. We compute the contribution from the Hall term and the MHD term to the energy flux. We use MMS data accumulated in the magnetosheath and the solar wind, and compare the results with previously established simulation results. We find that in observation, the MHD contribution is dominant at inertial scales, as in the simulations, but the Hall term becomes significant in observations at larger scales than in the simulations. Possible reasons are offered for this unanticipated result.
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Riddhi Bandyopadhyay (add twitter)
Luca Sorriso-Valvo (edit)
Alexandros Chasapis (add twitter)
Petr Hellinger (add twitter)
William H. Matthaeus (add twitter)
Andrea Verdini (add twitter)
Simone Landi (add twitter)
Luca Franci (add twitter)
Lorenzo Matteini (add twitter)
Barbara L. Giles (add twitter)
Daniel J. Gershman Craig J. Pollock (add twitter)
Christopher T. Russell (edit)
Robert J. Strangeway (add twitter)
Roy B. Torbert (edit)
Thomas E. Moore (edit)
James L. Burch (edit)
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07/16/19 06:03PM
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