Journal article
Chorus-related electrostatic bursts at Jupiter and Saturn
Journal of Geophysical Research, Vol.89(A1), pp.75-83
01/01/1984
DOI: 10.1029/JA089iA01p00075
Abstract
Analyses of the wideband plasma wave data obtained by Voyagers 1 and 2 at Jupiter and Saturn have revealed electrostatic bursts similar to those recently discovered at earth in association with whistler-mode chorus. In all three magnetospheres the bursts are characterized by sporadic emissions near or slightly below the electron plasma frequency with bandwidths ranging from 10 percent to more than 50 percent of the center frequency. The events found at Jupiter occur in the middle magnetosphere during both the dayside as well as the early morning passes. At Saturn, the bursts occurred in the outer regions of the magnetosphere during the dayside pass. In each of the events analyzed, evidence exists for modulation of the electrostatic bursts by a low frequency wave, presumably chorus. One of the observations gained at Jupiter includes the detection of a low-frequency band at the proper frequency for chorus. Detailed waveform analysis confirms that this band does, indeed, modulate the electrostatic bursts. Based on the present understanding of the terrestrial observations it is believed that the electrostatic bursts are generated by an electron beam trapped in Landau resonance with the chorus. Previously announced in STAR as N83-37042
Details
- Title: Subtitle
- Chorus-related electrostatic bursts at Jupiter and Saturn
- Creators
- L. A. Reinleitner - Iowa UnivW. S. Kurth - Iowa UnivD. A. Gurnett - Iowa, University
- Resource Type
- Journal article
- Publication Details
- Journal of Geophysical Research, Vol.89(A1), pp.75-83
- DOI
- 10.1029/JA089iA01p00075
- ISSN
- 0148-0227
- eISSN
- 2156-2202
- Language
- English
- Date published
- 01/01/1984
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455554302771
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