Electron hybrid code simulation of whistler-mode chorus generation with real parameters in the Earth's inner magnetosphere

Yuto Katoh, Yoshiharu Omura

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We carry out a self-consistent simulation of the generation process of whistler-mode chorus by a spatially one-dimensional electron hybrid code, by assuming the magnetic field inhomogeneity corresponding to L = 4 of the dipole field. Chorus emissions with rising tones are reproduced in the simulation result, while the frequency range, sweep rate, and the amplitude profiles in the spectra of the reproduced elements are consistently explained by the nonlinear wave growth theory. We compare the simulation results with the observation by the Cluster spacecraft (Santolik et al. in J Geophys Res 108:1278, 2003, doi: 10.1029/2002JA009791; Santolik in Nonlinear Process Geophys 15:621-630, 2008) and reveal similarities of the spectral fine structure of reproduced chorus elements with the observation. On the other hand, there is no gap at half the gyrofrequency in the spectra of the reproduced chorus elements, which is evident in the observation. This difference implies that the mechanism of a gap at half the gyrofrequency is governed by the process that is not described by the spatially one-dimensional simulation treating purely parallel propagating electromagnetic waves. [Figure not available: see fulltext.]

本文言語English
論文番号192
ジャーナルearth, planets and space
68
1
DOI
出版ステータスPublished - 2016 12 1

ASJC Scopus subject areas

  • 地質学
  • 宇宙惑星科学

フィンガープリント

「Electron hybrid code simulation of whistler-mode chorus generation with real parameters in the Earth's inner magnetosphere」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル