Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh21a0391r&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SH21A-0391
Physics
7513 Coronal Mass Ejections, 7514 Energetic Particles (2114)
Scientific paper
An unexpected use of SMEI observations has arisen from the analysis of protons accelerated and released from CME-driven shocks and observed at the L1 lagrange point. Such protons can be uniquely linked with observed CMEs through basic analysis of their dynamic energy spectrum. Additional information regarding the evolution of CME velocities out to 1 AU can then be used to determine how these protons were released in the shock reference frame. Here we use the excellent SMEI coverage of the May 29 2003 CME to construct a model of the most likely proton energy to be accelerated and released from this CME-driven shock as a function of its position. The resulting model could serve as a useful mean to test our ideas of particle acceleration at MHD shocks. In addition, by deriving the spatial and temporal origin of protons which are subsequently observed at L1, such a model represents a novel basis to probe the effects of interplanetary scattering.
Robinson Ian M.
Simnett George M.
Tappin James
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