Journal article
Measurements of plasma wave spectra in Jupiter's magnetosphere
Journal of geophysical research. Space physics, Vol.86(A10), pp.8181-8198
09/30/1981
DOI: 10.1029/JA086iA10p08181
Abstract
The Voyager-1 and -2 plasma wave instruments had to be designed without direct knowledge of the intensities or spectral characteristics of waves in Jupiter's magnetosphere, the possible environmental problems at Jupiter, or the possible in-flight interference effects from Voyager subsystems. The wave instruments operated continuously during the 1979 Voyager encounters, and the performance of the receiver/spacecraft system within the magnetosphere of Jupiter can be assessed now in detail. The authors present compressed plots of E-field averages for all of the 16-channel spectrum analyzer data from the Voyager-1 and -2 magnetosphere traversals to provide an overall framework for the discussion. The importance of considering peaks, as well as averages, by using 16-channel measurements from the first inbound and last outbound bow shock for Voyager-2 is illustrated. Selected wide-band measurements are presented from the wave form receivers to demonstrate how many important wave bursts are variable in times less than, or comparable to, the 4-sec scan period of the 16-channel analyzer. These signal characteristics could not be determined by using the 16-channel analyzer data alone. The authors show how the continuous frequency coverage of the wave form data link provides extremely valuable information on the complex spectra of Jupiter plasma waves. These wide-band frames also lead to the identification of significant variable interference effects associated with the changing interaction between spacecraft subsystems and the Jupiter plasma environment.
Details
- Title: Subtitle
- Measurements of plasma wave spectra in Jupiter's magnetosphere
- Creators
- F Scarf - Defense SystemsD A Gurnett - University of Iowa, Physics and AstronomyW Kurth - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.86(A10), pp.8181-8198
- DOI
- 10.1029/JA086iA10p08181
- ISSN
- 0148-0227
- Comment
- This article also appears in: Voyager Missions to Jupiter
- Language
- English
- Date published
- 09/30/1981
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984454340402771
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