Affiliation: | a CESR, CNRS/UPS, 9 Avenue du Colonel Roche, BP 4346, 31028 Toulouse Cedex 4, France b Physics Department, University of New Brunswick, P.O. Box 4400, Fredericton, NB, Canada E3B 5A3 c Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA d Imperial College, London, UK e Earth and Space Sciences, University of Washington, Seattle 98195, USA f University of New Hampshire, Durham, USA g MPI, Garching, Germany h MPAe, Katlenburg-Lindau, Germany i CNR-IFSI, Frascati, Italy j IRF, Kiruna, Sweden |