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Cassini and Wind Stereoscopic Observations of Jovian Non-Thermal Radio EmissionsDuring two intervals in 1999, simultaneous observations of Jupiter's decametric and hectometric radio emissions were made with the Cassini radio and plasma wave instrument (RPWS) and the radio and plasma wave instrument (WAVES) on the Wind spacecraft in Earth orbit. During January, the Jovian longitude difference between the two spacecraft was about 5 deg, whereas for the August-September Earth flyby of Cassini, the angle ranged from 0 deg to about 2.5 deg. With these separations, the instantaneous widths of the walls of the hollow conical radiation beams of some of the decametric arcs were measured suggesting that the typical width is approximately 2 deg. The conical beams seem to move at Io's revolution rate rather than with Jupiter's rotation rate. Additionally, some of the non-arc emissions have very narrow and quite peculiar beamwidths.
Document ID
20000004372
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Kaiser, Michael L.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Kurth, W. S.
(Iowa Univ. Iowa City, IA United States)
Hospodarsky, G. B.
(Iowa Univ. Iowa City, IA United States)
Gurnett, D. A.
(Iowa Univ. Iowa City, IA United States)
Zarka, P.
(Observatoire de Paris-Meudon France)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Publication Information
Publication: Journal of Geophysical Research
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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