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Title: Which mechanisms dissipate turbulence in the solar wind
Plain: Several processes can turn turbulent wave energy into particle heat without collisions, such as particles moving in step with waves or being pushed around by strong fluctuations. Their relative importance in the solar wind is unknown.
Precise: Quantify the fractions of cascade power dissipated by Landau damping, transit-time damping, ion-cyclotron resonance, stochastic heating, and reconnection in thin current sheets, for solar-wind plasma between 0.1 and 1 AU. An answer is a measured partition using field-particle correlation diagnostics, consistent with kinetic simulations.
Settled by: Field-particle correlation analyses of high-cadence spacecraft data giving each channel's share with uncertainties.
Kind: phenomenon
Answer type: identification
References: (empty)
Literature status: open
Status note: Field-particle correlation identified electron Landau damping in magnetosheath turbulence in 2019; a full partition is lacking.
Posed since: (empty)