Agapitov, O.

Kis, Árpád

Klecker, B.

Krasnosselskikh, V.

Lemperger, István

Scholer, M.

Wesztergom, Viktor

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ION ACCELERATION IN FRONT OF THE EARTH’SPARALLEL BOW SHOCK: NEW RESULTS AND OPENQUESTIONSA. Kis2, M. Scholer1, B. Klecker1, V. Krasnosselskikh3, O.Agapitov3, E. Kronberg4, P. Daly4, E. A. Lucek5, I. Dandouras6,I. Lemperger2, V. Wesztergom21 Max-Planck-Institut fu¨r extraterrestrische Physik, Garching, Germany,2Research Centre for Astronomy and Earth Sciences, Sopron, Hungary,3LPC2E, CNRS, Orleans, France, 4 MPS, Katlenburg-Lindau, Germany,5The Blackett Laboratory, Imperial College, London, UK, 6CESR,Toulouse, FranceIn our presentation we analyze the three important requirements of anefficient first order Fermi ion acceleration: injection, diffusive scattering andfree escape boundary (or cross-field diffusion). Using simultaneous multi-spacecraft data provided by Cluster we present individual events that il-lustrate the details of the ion acceleration mechanism but also provide aninsight how the mechanism can differ from event to event.1

ION ACCELERATION IN FRONT OF THE EARTH’S PARALLEL BOW SHOCK: NEW RESULTS AND OPEN QUESTIONS

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