20 * 20000 Leagues Under the CME
Dennis K. Haggerty
Johns Hopkins University/Applied Physics Laboratory, Laurel, MD  20723, USA

ABSTRACT
The solar corona is a prodigious accelerator of energetic ions, and electrons and the angular distribution, composition, and 
spectra of energetic particles observed near Earth gives information on the acceleration mechanisms.  A particular class of 
energetic particle observations found useful in understanding the solar acceleration are the near-relativistic impulsive 
beam-like electron events.  During five years of operation The Advanced Composition Explorer (ACE) has made measurements of well
over 400 electron events.  Approximately 25% of these electron events are impulsive beam-like events and are released onto 
interplanetary field lines predominantly from western solar longitudes.  This presentation covers a five year statistical 
analysis of these beam-like energetic electron events in relationship to optical flares, microwave emission, soft X-ray emission,
metric and decametric type-III radio bursts, and coronal mass ejections.  Emphasis is placed on events with associated energetic
ion observations placing constraints on the timing and coronal height where these energetic particles are released into the 
heliosphere.