The inner magnetosphere of Saturn: Cassini RPWS cold plasmaresults from the first encounter
- Wahlund, J.-E.
- Boström, R.
- Gustafsson, G.
- Gurnett, D.A.
- Kurth, W.S.
- Averkamp, T.
- Hospodarsky, G.B.
- Persoon, A.M.
- Canu, P.
- Pedersen, A.
- Desch, M.D.
- Eriksson, A.I.
- Gill, R.
- Morooka, M.W.
- Andre, M.
DOIAbstract
We present new results from the inner magnetosphereof Saturn obtained by the Radio and Plasma Wave Science(RPWS) investigation onboard Cassini around the period ofthe Saturn orbit injection (July 1, 2004). Plasma waveelectric field emissions, voltage sweeps by the Langmuirprobe (LP) and radio sounder data were used to infer thecold plasma (<100 eV) characteristics within 20 RSofSaturn. A dense (<150 cm3) and cold (<7 eV) plasma toruswas found just outside the visible F-ring. This torus ofpartly dusty plasma does not perfectly co-rotate with Saturn,which suggests the cold plasma is electro-dynamicallycoupled to the charged ring-dust particles. The spacecraftpotential was a few volts negative above the E- and G-rings,indicating the dust-parti...
Add to ORKG