Joint Observations of Low-Frequency Jovian Radio Emissions with the Cassini and Galileo Spacecraft

Details Joint Observations of Low-Frequency Jovian Radio Emissions with the Cassini and Galileo Spacecraft Joint Observations of Low-Frequency Jovian Radio Emissions with the Cassini and Galileo Spacecraft

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm21a0526h&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SM21A-0526

Physics

2756 Planetary Magnetospheres (5443, 5737, 6030), 5737 Magnetospheres (2756), 6939 Magnetospheric Physics, 7871 Waves And Instabilities

Scientific paper

The Cassini gravity-assisted flyby of Jupiter has provided nearly continuous Radio and Plasma Wave System (RPWS) data from the early part of 2000 to the present (the distance between the Cassini spacecraft and Jupiter has ranged from 137 to over 5000 Jovian radii). During this period, the Galileo Plasma Wave System (PWS) in orbit around Jupiter has also obtained many days of radio and plasma wave data. The availability of simultaneous measurements from two different spacecraft provides a new opportunity to examine the characteristics of the many Jovian radio emissions, including the low-frequency radio emissions in the 1 to 50 kHz range. These low frequency emissions have a variety of characteristics, and include narrowband tones, quasi-periodic bursts, and three types of continuum-like emissions (escaping, trapped, and anomalous continuum). Furthermore, the ability of the Cassini RPWS system to perform direction finding on many of these emissions provides insight on source locations and processes. We will examine the Cassini and Galileo observations of these emissions, compare them to the earlier results from Voyager and Ulysses, and discuss the source locations and generation mechanisms.

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