Characterizing the Velocity-Space Signatures of Electron Landau Damping

A long-standing goal in the heliophysics community is to understand the mechanisms of particle energization that dissipate turbulent energy in the weakly collisional plasma of the solar wind. One of these dissipation mechanisms is Landau damping. The extent to which this mechanism and others contribute to turbulence dissipation remains unclear due to the inherent difficulty in observing and simulating the small length scales and fast time scales involved. However, evidence for electron Landau damping has been found in situ near 1 AU using the field-particle correlation (FPC) technique. Motivated by these observations, we apply the FPC technique to gyrokinetic simulations of strong plasma turbulence in the dissipation range at varying plasma-β in order to develop a more thorough understanding of how to identify signatures of electron Landau damping throughout the heliosphere. Additionally, we demonstrate the ability of the field-particle correlation technique to recover velocity-space signatures of resonant Landau damping when the frequency of the damped Alfvén wave is above the Nyquist frequency of the spacecraft.