- 1Austrian Academy of Sciences, Space Research Institute, Graz, Austria (martin.volwerk@oeaw.ac.at)
- 2Institute of Geophysics and Planetary Physics, UCLA, USA
- 3Climate and Space Sciences and Engineering, University of Michigan, USA
- 4Laboratory for Atmospheric and Space Physics, University of Colorado, USA
- 5Max Planck Institute for Solar System Research, Goettingen, Germanz
Ion cyclotron waves (ICWs) have shown to be a valuable tool to identify pick-up ion species around planets and moons, when plasma instruments are not sufficiently available. We investigate the high-resolution (3 Hz) Galileo magnetometer data for the presence of ICWs of various sulfur-bearing species and other elements heavier than oxygen (this because the IC frequency should be below the Nyquist frequency of 1.5 Hz). We find evidence for SOx (x = 0 – 3), Cl, K and H2S, however, the deduced pick-up densities vary strongly along the different flybys. Using the deduced pick-up densities for each flyby and a model for the neutral gas escaping Io, which gets ionized, we can obtain an estimate for the total mass loss of this volcanic moon.
How to cite: Volwerk, M., Schmid, D., Kivelson, M., Khurana, K., Jia, X., Lammer, H., Simon Wedlund, C., Bagenal, F., Dols, V., Nakamura, R., Krupp, N., and Roussos, E.: Ion Pick-up around Io in the Galileo Era, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-1582, https://doi.org/10.5194/egusphere-egu25-1582, 2025.
