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A field–particle correlation analysis of a perpendicular magnetized collisionless shock
Journal article   Open access   Peer reviewed

A field–particle correlation analysis of a perpendicular magnetized collisionless shock

James Juno, Gregory G Howes, Jason M TenBarge, Lynn B Wilson, Anatoly Spitkovsky, Damiano Caprioli, Kristopher G Klein and Ammar Hakim
Journal of plasma physics, Vol.87(3), 905870316
06/2021
DOI: 10.1017/S0022377821000623
Appears in  UI Libraries Support Open Access
url
https://doi.org/10.1017/S0022377821000623View
Published (Version of record) Open Access

Abstract

Using the field–particle correlation technique, we examine the particle energization in a three-dimensional (one spatial dimension and two velocity dimensions; 1D-2V) continuum Vlasov–Maxwell simulation of a perpendicular magnetized collisionless shock. The combination of the field–particle correlation technique with the high-fidelity representation of the particle distribution function provided by a direct discretization of the Vlasov equation allows us to ascertain the details of the exchange of energy between the electromagnetic fields and the particles in phase space. We identify the velocity-space signatures of shock-drift acceleration of the ions and adiabatic heating of the electrons arising from the perpendicular collisionless shock by constructing a simplified model with the minimum ingredients necessary to produce the observed energization signatures in the self-consistent Vlasov–Maxwell simulation. We are thus able to completely characterize the energy transfer in the perpendicular collisionless shock considered here and provide predictions for the application of the field–particle correlation technique to spacecraft measurements of collisionless shocks.
 astrophysical plasmas plasma simulation space plasma physics UIOWA OA Agreement

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