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- W4386979912 abstract "Abstract In this study we explore the statistics of pressure fluctuations in kinetic collisionless turbulence. A 2.5D kinetic particle-in-cell (PIC) simulation of decaying turbulence is used to investigate pressure balance via the evolution of thermal and magnetic pressure in a plasma with β of order unity. We also discuss the behavior of thermal, magnetic and total pressure structure functions and their corresponding wavenumber spectra. The total pressure spectrum exhibits a slope of −7/3 extending for about a decade in the ion-inertial range. In contrast, shallower −5/3 spectra are characteristic of the magnetic pressure and thermal pressure. The steeper total pressure spectrum is a consequence of cancellation caused by density-magnetic field magnitude anti-correlation. Further, we evaluate higher order total pressure structure functions in an effort to discuss intermittency and compare the power exponents with higher order structure functions of velocity and magnetic fluctuations. Finally, applications to astrophysical systems are also discussed." @default.
- W4386979912 created "2023-09-24" @default.
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- W4386979912 date "2023-09-22" @default.
- W4386979912 modified "2023-09-30" @default.
- W4386979912 title "Statistics of Pressure Fluctuations in Turbulent Kinetic Plasmas" @default.
- W4386979912 doi "https://doi.org/10.1093/mnras/stad2871" @default.
- W4386979912 hasPublicationYear "2023" @default.
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