HR: 16:15h
AN: SH14A-02    [Abstracts]
TI: SEP Acceleration Efficiency of CMEs
AU: * Howard, R A
EM: russ.howard@nrl.navy.mil
AF: Naval Research Laboratory, E.O. Hulburt Center for Space Research, Washington, DC 20375 United States
AU: Vourlidas, A
EM: vourlidas@nrl.navy.mil
AF: Naval Research Laboratory, E.O. Hulburt Center for Space Research, Washington, DC 20375 United States
AU: Mewaldt, R E
EM: rmewaldt@srl.caltech.edu
AF: California Institute of Technology, MS 220-47 Downs Lab, Pasadena, CA 91125 United States
AB: We investigate the efficiency of coronal mass ejections (CMEs) in accelerating solar energetic particles (SEPs) by comparing their respective kinetic energy budgets. Our SEP sample comprises a list of 20-30 well-observed events whose energy spectra are obtained by combining data from multiple in-situ instruments. The corresponding CMEs were observed with the LASCO coronagraphs. Calibrated images were used for the mass and velocity measurements. Because most of these events correspond to fast and extended CMEs, extra care was taken during the measurements to isolate the ejecta from other signatures usually associated with these type of events. The CME masses were corrected to the first order, for projection effects assuming radial propagation from the corresponding source regions. The implications for the acceleration efficiency of CMEs derived from the comparison between CME and SEP energies are discussed.
DE: 2101 Coronal mass ejections (7513)
DE: 2114 Energetic particles (7514)
DE: 7513 Coronal mass ejections (2101)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005