Heidelberg 2006 – scientific programme

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EP: Extraterrestrische Physik

EP 6: Poster

EP 6.7: Poster

Tuesday, March 14, 2006, 14:00–16:30, C

Ion Acceleration and Wave-Particle Interaction at the Interplanetary Shocks Associated with the Halloween 2003 and the 20 January 2005 Events: SOHO/HSTOF, SOHO/EPHIN, and ACE/MAG Observations — •Karin Bamert¹, Robert F. Wimmer-Schweingruber¹, Reinald Kallenbach², Martin Hilchenbach³, Bernd Heber¹, Reinhold Müller-Mellin¹, Andreas Klassen¹, and Charles W. Smith⁴ — ¹Institut für Experimentelle und Angewandte Physik, University of Kiel, Leibnizstrasse 11, 24098 Kiel — ²International Space Science Institute, Hallerstrasse 6, CH-3012 Bern, Schweiz — ³Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Strasse 2, 37191 Katlenburg-Lindau — ⁴Dept. of Physics and Space Science Center, 39 College Road , Durham, NH 03824, USA

We analyze suprathermal and energetic ions associated with three large coronal mass ejection events during the two most active time periods in the declining phase of this solar cycle. The CMEs and associated flares were observed on Nov. 2 and Nov. 4, 2003 (Halloween events) and on January 20, 2005, by SOHO/LASCO and SOHO/EIT. The second event was accompanied by the largest flare (X28) ever observed. In particular, we focus our study on the upstream regions of the interplanetary shocks driven by these CMEs. By combining data of HSTOF and EPHIN we are able to analyze the ions in a large energy range. We compare these results to those associated with the Bastille Day event in 2000, and discuss them in the context of models based of quasi-linear theory of ion acceleration and wave-particle interaction at interplanetary traveling shocks.