NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Control of Jovian Radio Emission by CallistoGalileo has been in orbit around Jupiter since December 1995 and a large database has been collected. We present the results of a survey of the plasma wave data for the frequency range 2.0 MHz to 5.6 MHz, the low frequency decametric (DAM) emissions. While the control of a portion of the radio emission by the moon lo is well known, and Ganymede control has been more recently indicated, we report that a small but significant portion of DAM emission is seen to be correlated with the orbital phase of Callisto. While the occurrence rate of emission controlled by Ganymede and Callisto is considerably less than for lo, the power levels can be nearly the same. We estimate the power of the Callisto-dependent emission to be approx. 70% of the Io-dependent radio emission and about the same as the Ganymede-dependent radio emission. This result indicates an Alfven current system associated with Callisto, and thus a significant interaction of the magnetosphere of Callisto with that of Jupiter as is believed to exist for both lo and Ganymede.
Document ID
20020034526
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Menietti, J. D.
(Iowa Univ. Iowa City, IA United States)
Gurnett, D. A.
(Iowa Univ. Iowa City, IA United States)
Christopher, I.
(Iowa Univ. Iowa City, IA United States)
Date Acquired
August 20, 2013
Publication Date
August 1, 2001
Publication Information
Publication: Geophysical Research Letters
Publisher: American Geophysical Union
Volume: 28
Issue: 15
ISSN: 0094-8276
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
Paper-2001GL02965
Funding Number(s)
CONTRACT_GRANT: NAG5-8919
CONTRACT_GRANT: JPL-958779
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available