HR: 0800h
AN: SM41A-1106    [Abstracts]
TI: A Remarkable Energetic Electron Event In Late July 2004
AU: * Blake, J B
EM: jbernard.blake@aero.org
AF: Space Sciences Department, The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009 United States
AU: O'Brien, T P
EM: paul.obrien@aero.org
AF: Space Sciences Department, The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009 United States
AB: Beginning late on Day 204 (2004) ACE observed a solar wind speed of almost 700 km/sec and Bz strongly southward for many hours. The trapped energetic electron population (~ 1 MeV) showed a strong increase, peaked near L = 4 and with a lower edge just outside of L=3. Late on Day 207 the solar wind speed again approached 700 km/sec and again Bz was strongly south. The energetic electrons responded again, with the intense population reaching down to L=2.4. Then on the beginning of Day 209, the solar wind velocity went to 1000 km/sec with Bz strongly south for a third time. The entire outer zone filled with energetic electrons from L=2 to GEO. HEO observations of the entire outer zone showed the most intense population of energetic electrons since the launch of 1994-026 in the Spring of 1994. The energy spectrum also was very hard. In addition the GEO population of > 2 MeV electrons were higher than had been observed since at least 1986. These and other observations will be discussed and compared with the observations made during the remarkable series of events in October-October-November 2003.
DE: 2730 Magnetosphere--inner
DE: 2740 Magnetospheric configuration and dynamics
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting