Ion Cyclotron Waves Observed at Galileo's Io Encounter: Implications for Neutral Cloud Distribution

Details Ion Cyclotron Waves Observed at Galileo's Io Encounter: Implications for Neutral Cloud Distribution Ion Cyclotron Waves Observed at Galileo's Io Encounter: Implications for Neutral Cloud Distribution

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.2122w&link_type=abstract

American Astronomical Society, DPS meeting #28, #21.22; Bulletin of the American Astronomical Society, Vol. 28, p.1138

Astronomy and Astrophysics

Astronomy

Scientific paper

At Galileo's Io encounter on December 7, 1995, the magnetic field experiment detected large-amplitude, highly coherent waves near the SO(+_2) and SO(+) gyro-frequencies. On the inbound leg of the flyby, these waves were detected starting about 18 RIO from Io. Their power spectral density decreased as 1/r(3) . On the outbound leg, the waves decayed more rapidly. The waves are believed to be caused by the ionization and pickup of particles originating from Io by the corotating magnetospheric plasma. The presence of wave power near the molecular ion gyro-frequencies reveals that neutral molecules survive intact over a surprisingly large range of distances from Io.

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