Accession Number : ADA138377

Title :   A Summary of Whistlers Observed by Voyager 1 at Jupiter.

Descriptive Note : Progress rept.,


Personal Author(s) : Kurth,W S ; Strayer,B D ; Gurnett,D A ; Scarf,F L

PDF Url : ADA138377

Report Date : 20 Dec 1983

Pagination or Media Count : 39

Abstract : We summarize the Voyager 1 observations of whistlers at Jupiter in order to provide a basis for further analyses of the density profile of the Io plasma torus as well as to support studies of atmospheric lightning at Jupiter. All the whistlers detected by Voyager 1 fell into three general regions in the torus at radial distances ranging between 5 and 6 R sub J. An analysis of the broadband wave amplitudes measured by the Voyager 1 plasma wave instrument and estimates of the peak whistler amplitudes imply the grouping of whistlers was due to variations in the sensitivity of the receiver to whistlers and not to variations in the source or propagation paths of the whistlers. The whistler dispersions are presented in statistical form for each of the three groups of events and analyzed in view of the structure of the Io plasma torus as determined by plasma probe measurements. The results of these analyses give source locations for the whistlers at the foot of the magnetic field lines threading the torus in both hemispheres and over a range of longitudes. (Author)

Descriptors :   *Whistlers, *Planetary atmospheres, *Lightning, Space probes, Jupiter(Planet), Dispersions, Plasmasphere

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE