Electrostatic Waves Around a Magnetopause Reconnection Secondary Electron Diffusion Region Modulated by Whistler and Lower‐Hybrid Waves

Abstract We investigate electrostatic waves in a magnetopause reconnection event around secondary electron diffusion region. Near the current sheet mid‐plane, parallel beam‐mode are modulated by whistler waves. conclude that anisotropy of energized electrons exhaust excites waves, which produce spatially beams through nonlinear Landau resonance, and these excite In separatrix region, propagating associated with field‐aligned perpendicular cyclotron harmonic loss cone distributions exhibit modulation frequencies lower‐hybrid wave (LHW) frequency range. infer LHWs scatter to alter cones modulate The results advance our understanding about regimes mechanisms reconnection, an emphasis on their coupling lower‐frequency electromagnetic