Title: Ordinary and extraordinary in situ composition of CME-related solar wind and SEPs

Authors: Wurz, P., R.F. Wimmer-Schweingruber, A.B. Galvin, F.M. Ipavich, B. Klecker, E. Möbius, M. Popecki, and T. Zurbuchen.

Charge state and composition measurements of CME-related solar wind and of Gradual Solar Energetic Particle (SEP) Events provide information on their coronal origins and acceleration processes. In this talk we combine in situ observations from SOHO, Wind, and ACE for selected ISTP/IACG CDAW intervals for an overview and comparison of plasma and suprathermal elemen- tal and charge state composition during CME-related events. Variations exist from one CME event to another, and occasionally exotic compositional signa- tures are observed (e.g., Wurz et al., 1998; Gloeckler et al., 1999; Moebius et al., 1999). In at least one CME-related event (May 2{3 1998), the solar wind charge states are not only extremely unusual (Gloeckler et al., 1999), but show a possible correspondence with the charge states measured in the associated Gradual SEP (Popecki et al., 1999; Wimmer-Schweingruber et al., 1999).

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Last Update: June 16, 2000, James Weygand