Magnetohydrodynamic and kinetic scale turbulence in the near-Earth space plasmas: a (short) biased review

摘要: The near-Earth space is a unique laboratory to explore turbulence and energy dissipation processes in magnetized plasmas thanks the availability of high-quality data from various orbiting spacecraft, such as Wind, Stereo, Cluster, Themis, more recent one, NASA Magnetospheric Multiscale (MMS) mission. In comparison with solar wind, plasma magnetosheath remains far less explored, possibly because complexity dynamics that challenges any “realistic” theoretical modeling it. This due different reasons confinement between two dynamical boundaries, namely bow shock magnetopause; high variability SW pressure “shakes” compresses continuously plasma; presence large-density fluctuations temperature anisotropies generate instabilities modes. this paper, we will review some results have obtained years on magnetosheath, both at magnetohydrodynamics (MHD) sub-ion (kinetic) scales, using state-of-the-art models situ spacecraft observations. We focus three major features turbulence, its nature scaling laws, role small-scale coherent structures heating, density enhancing turbulent cascade rate. latter estimated (analytical) exact laws derived for compressible MHD theories applied observations Cluster Themis spacecraft. Finally, discuss current trends research future missions dedicated topic are currently being prepared within community.