ON THE EXCITATION MECHANISM OF THE LOW-FREQUENCY UPSTREAM WAVES.

Yukio Watanabe, Toshio Terasawa

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The excitation mechanism of the upstream low-frequency waves (0. 01-0. 05 Hz) is investigated based on the wave observations. A comparison is made of the observed wave frequencies with the frequencies expected from the ion (proton) beam-cyclotron instability process. The beam velocity is estimated from the solar wind parameters using Sonnerup's formula. An analysis supports the hypothesis that these waves are excited by the resonant beam-cyclotron instability.

Original languageEnglish
Pages (from-to)6623-6630
Number of pages8
JournalJournal of Geophysical Research
Volume89
Issue numberA8
DOIs
Publication statusPublished - 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Forestry
  • Aquatic Science
  • Soil Science
  • Water Science and Technology
  • Earth-Surface Processes
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Palaeontology
  • Ecology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Atmospheric Science

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