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Io control of Jovian radio emissionThe possibility of Io controlling Jovian decametric radio emission, particularly in the region below 22 MHz, is discussed. Results of a two-year survey at 26.3 at 26.3 MHz are presented which demonstrate the control of Io over a high-intensity storm component of the radio emission and the independence of a weak radio component from the phase of Io, as was observed at lower frequencies. It is thus hypothesized that Io control is a flux-dependent rather than a frequency-dependent phenomenon, and results of analyses at 18 and 10 MHz which support this hypothesis are presented. The apparent correlation between frequency and Io control is thus shown to result from a selection effect due to the increase of non-Io emission with decreasing frequency and relative antenna detection threshold. This result implies a contiguous Io-controlled source region extending out several Jovian radii along the Io flux tube.
Document ID
19810027154
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Desch, M. D.
(NASA Goddard Space Flight Center Planetary Magnetospheres Branch, Greenbelt; Maryland, University, College Park, Md., United States)
Date Acquired
August 11, 2013
Publication Date
October 30, 1980
Publication Information
Publication: Nature
Volume: 287
Subject Category
Lunar And Planetary Exploration
Accession Number
81A11558
Distribution Limits
Public
Copyright
Other

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