Statistics of Whistler-Mode Waves in the Near-Earth Plasma Sheet

Electromagnetic whistler-mode waves are among the wave modes mainly responsible for energetic electron scattering and acceleration in the inner magnetosphere and near-Earth plasma sheet. Although whistler-driven electron precipitation significantly contributes to diffuse aurora at large L-shells of similar to 9-13, all existing empirical models of whistler-mode waves are limited to the inner magnetosphere, at L < 9. This study aims to utilize more than 10 years of Time History of Events and Macroscale Interactions during Substorms observations to investigate main properties of whistler-mode waves in the near-Earth plasma sheet. We reveal relations between wave intensity (B-omega(2)) and characteristics of the anisotropic electron population. We showed that in 99% of whistler wave events, the observed B-omega(2), mean wave frequency < f >, and wave spectrum width.f are consistent with expectations from the quasi-linear theory of wave-particle resonant interactions. Based on these statistics, we built an empirical model of B-omega(2), < f >, and Delta f as a function of L-shell and MLT. This model extends existing inner magnetosphere models to a higher L-shell range.