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Voyager observations of Jovian millisecond radio burstsVoyager Planetary Radio Astronomy data collected over 30-day intervals centered on the two close encounters with Jupiter were utilized to study the characteristics of millisecond-duration radio bursts (s-bursts) at frequencies between 5 and 15 MHz. In this frequency range, s-bursts are found to occur almost independently of Central Meridian Longitude and to depend entirely on the phase of Io with respect to the observer's planetocentric line of sight. Individual bursts typically cover a total frequency range of about 1.5 to 3 MHz, and they are usually strongly circularly polarized. Most bursts in a particular s-burst storm will exhibit the same polarization sense (either right-hand or left-hand), and there is some evidence for a systematic pattern in which one polarizations sense is preferred over the other as a function of Io phase and Central Meridian Longitude. These data are all suggestive of a radio source that is located along the instantaneous Io flux tube and that extends over a linear dimension of 5000 km along the field lines in both the northern and southern Hemispheres.
Document ID
19840009041
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Alexander, J. K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Desch, M. D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Space Radiation
Report/Patent Number
NASA-TM-86052
NAS 1.15:86052
Accession Number
84N17109
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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