Local time distributions of repetition periods for rising tone lower band chorus waves in the magnetosphere

Jih Hong Shue, Yi Kai Hsieh, Sunny W.Y. Tam, Kaiti Wang, Hui Shan Fu, Jacob Bortnik, Xin Tao, Wen Chieh Hsieh, Gilbert Pi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Whistler mode chorus waves generally occur outside the plasmapause in the magnetosphere. The most striking feature of the waves is their occurrence in discrete elements. One of the parameters that describe the discrete elements is the repetition period (Trp), the time between consecutive elements. The Trp has not been studied statistically before. We use high-resolution waveform data to derive distributions of Trp for different local times. We find that the average Trp for the nightside (0.56 s) and dawnside (0.53 s) are smaller than those for the dayside (0.81 s) and duskside (0.97 s). Through a comparison with the background plasma and magnetic fields, we also find that the total magnetic field and temperature are the main controlling factors that affect the variability of Trp. These results are important for understanding the generation mechanism of chorus and choosing parameters in simulations that model the acceleration and loss of electrons by wave-particle interactions. Key Points First statistical study on repetition period of chorus First local time distributions of the repetition period Main controlling factors of repetition period identified as the total magnetic field and temperature

Original languageEnglish
Pages (from-to)8294-8301
Number of pages8
JournalGeophysical Research Letters
Volume42
Issue number20
DOIs
Publication statusPublished - 2015 Oct 28

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magnetospheres
magnetosphere
repetition
magnetic field
temperature
plasma
electron
magnetic fields
plasmapause
wave-particle interactions
simulation
distribution
waveforms
parameter
occurrences
high resolution
electrons
loss
comparison
particle

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Shue, Jih Hong ; Hsieh, Yi Kai ; Tam, Sunny W.Y. ; Wang, Kaiti ; Fu, Hui Shan ; Bortnik, Jacob ; Tao, Xin ; Hsieh, Wen Chieh ; Pi, Gilbert. / Local time distributions of repetition periods for rising tone lower band chorus waves in the magnetosphere. In: Geophysical Research Letters. 2015 ; Vol. 42, No. 20. pp. 8294-8301.
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Local time distributions of repetition periods for rising tone lower band chorus waves in the magnetosphere. / Shue, Jih Hong; Hsieh, Yi Kai; Tam, Sunny W.Y.; Wang, Kaiti; Fu, Hui Shan; Bortnik, Jacob; Tao, Xin; Hsieh, Wen Chieh; Pi, Gilbert.

In: Geophysical Research Letters, Vol. 42, No. 20, 28.10.2015, p. 8294-8301.

Research output: Contribution to journalArticle

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AU - Fu, Hui Shan

AU - Bortnik, Jacob

AU - Tao, Xin

AU - Hsieh, Wen Chieh

AU - Pi, Gilbert

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