Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsh32a..05m&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SH32A-05
Physics
2101 Coronal Mass Ejections (7513), 2114 Energetic Particles (7514)
Scientific paper
Both solar flares and shock waves driven by fast coronal mass ejections (CMEs) can accelerate charged particles in the solar corona and create transient enhancements of solar energetic particle (SEP) fluxes in interplanetary space, known as SEP events. Since fast CMEs and flares often occur together, it is diffcult to directly identify the actual source of the SEPs detected near Earth orbit. In this paper, we attempt to single out fast CMEs without any signature of particle acceleration related to a flare. In order to minimize effects of occultation by the solar limb, we choose meter wave radio emission from energetic electrons as a tracer of flare-related particle acceleration, because this emission arises at greater coronal heights than X-rays or centimetric radio waves. In truly radio-silent fast CMEs, where the absence of metric radio emission is not due to limb occultation, the only source of SEP acceleration should be the shock wave driven by the CME.
Klein Lior
Marqué Ch.
Posner Arik
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