M. Volwerk1,X. Jia2,C. Paranicas3,W. S. Kurth4,M. G. Kivelson5,and K. K. Khurana5M. Volwerk et al. M. Volwerk1,X. Jia2,C. Paranicas3,W. S. Kurth4,M. G. Kivelson5,and K. K. Khurana5
1Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
2Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI, USA
3The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
4Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
5Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, CA, USA
1Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
2Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI, USA
3The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
4Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
5Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, CA, USA
Received: 24 Sep 2012 – Revised: 03 Dec 2012 – Accepted: 05 Dec 2012 – Published: 07 Jan 2013
Abstract. Ganymede's mini-magnetosphere, embedded in Jupiter's larger one, sustains ULF (ultra-low frequency) waves that are analyzed here using data from two Galileo flybys that penetrate deeply into the upstream closed field line region. The magnetometer data are used to identify field line resonances, magnetopause waves and ion cyclotron waves. The plasma densities that are inferred from the interpretation of these waves are compared with the observations made by other plasma and wave experiments on Galileo and with numerical and theoretical models of Ganymede's magnetosphere.
