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Parashar, Tulasi N.; Matthaeus, William H.; Shay, Michael A.
Astrophysical journal. Letters, 09/2018, Letnik: 864, Številka: 1Journal Article
We study the effects of plasma β (the ratio of plasma pressure to magnetic pressure) on the evolution of kinetic plasma turbulence using fully kinetic particle-in-cell simulations of decaying turbulence. We find that the plasma β systematically affects spectra, measures of intermittency, decay rates of turbulence fluctuations, and partitioning over different channels of energy exchange. More specifically, an increase in plasma β leads to greater total heating, with proton heating preferentially more than electrons. Implications for achieving magnetosheath like temperature ratios are discussed.
