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Upstream waves in Saturn's foreshockAn analysis based on plasma and magnetic-field data obtained from Voyager 1 during its Saturn encounter is reported. The plasma data provided every 96 sec and magnetic-field data averaged over 48 sec are utilized. The evidence of upstream waves at Saturn are detected. The waves have a period, in the spacecraft frame, of about 550 sec and a relative amplitude larger than 0.3, are left- and right-hand elliptically polarized, and propagate at about 30 deg with respect to the average magnetic field. The appearance of the waves is correlated with the spacecraft being magnetically connected to the bow shock.
Document ID
Document Type
Reprint (Version printed in journal)
Bavassano Cattaneo, M. B.
(CNR Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy)
Cattaneo, P.
(Consiglio Nazionale delle Ricerche Frascati, Italy)
Moreno, G.
(Roma I, Universita Rome, Italy)
Lepping, R. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1991
Publication Information
Publication: Geophysical Research Letters
Volume: 18
ISSN: 0094-8276
Subject Category
Lunar And Planetary Exploration
Accession Number
Distribution Limits

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