Ion Kinetics of Plasma Flows: Earth's Magnetosheath versus Solar Wind

Abstract Revealing the formation, dynamics, and contribution to plasma heating of magnetic field fluctuations in solar wind is an important task for heliospheric physics a general turbulence theory. Spacecraft observations are limited spatially localized measurements, so that evolution fluctuation properties with propagation mostly studied via statistical analyses data sets collected by different spacecraft at various radial distances from Sun. In this study we investigate Earth’s magnetosheath, system sharing many wind. The near-Earth space environment being explored multiple missions, which may allow us trace magnetosheath simultaneous measurements their origin, bow shock. We compare ARTEMIS Magnetospheric Multiscale (MMS) Mission Earth Parker Solar Probe distances. comparison supported three numerical simulations fluctuations: global hybrid simulation resolving ion kinetic including effects dipole realistic shock, Hall-MHD expanding boxes mimic volume expansion distance dayside shows can be considered as miniaturized version much stronger thermal anisotropy almost equal amount forward backward propagating Alfvén waves. Thus, processes, such development instability contributions heating, occurring on slow timescales over large wind, occur more rapidly investigated detail spacecraft.