Dr. Roger Karlsson
The Cassini Radio and Plasma Wave Science instrument
Institut für Weltraumforschung, Österreichische Akademie der Wissenschaften
The Cassini spacecraft will orbit Saturn for four years and during that time the Radio and Plasma Wave Science (RPWS) instrument will be used to study radio emissions, plasma, and dust. The instrument measures the electric field with three 10 m long electric antennas, the magnetic field with three orthogonal search coil magnetometers and the electron density and temperature using a Langmuir probe. These sensors can be connected to five different receivers allowing measurements of the electric field in the frequency range 1 Hz--16 MHz and the magnetic field in the range 1 Hz--12 kHz. The electric antennas can also be connected to a sounding transmitter for exciting plasma resonances.
n this talk, an overview of the instrument will be given and examples of measured data will be presented, in particular radio emissions. There are many phenomena connected to Saturnian radio emissions: electron beams in the auroral region, bright polar lights, radio modulation indicating planetary rotatation, among others.
PDF-Datei der Präsentation (1,10 MB)