Predicting Energetic Proton Events from Solar Soft X-ray Temperatures and Hard X-ray Spectra

Details Predicting Energetic Proton Events from Solar Soft X-ray Temperatures and Hard X-ray Spectra Predicting Energetic Proton Events from Solar Soft X-ray Temperatures and Hard X-ray Spectra

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh32b..06g&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH32B-06

Other

2118 Energetic Particles, Solar, 7514 Energetic Particles (2114), 7519 Flares, 7554 X Rays, Gamma Rays, And Neutrinos

Scientific paper

Apparently disparate phenomena of anomalous low temperature solar soft x-rays and spectrally hardening hard x-rays are empirically related to interplanetarly energetic proton events and to one another; most flares that exhibit low temperatures in soft X-rays also exhibit spectral hardening in hard X-rays. The converse, however, is not always true - some spectrally hardening flares are not low temperature in the case of some very intense soft X-ray flares although the former are nearly always associated with proton events. Anomalous low temperatures associate with proton events for nearly all moderate to large soft X-ray flares where the heliographic location on the Sun provides good connectivity with the Earth. Thus, these phenomena appear to be complementary, one being a good proton predictor for large flares and the other a good predictor for moderate sized flares. In general, however, the two phenomena appear to be manifestations of a single species of solar flare. The defining characteristics of this species of flare and how it is related to these phenomena and to the production of energetic proton events is not well know at this time, but certain inferences may be mode from theory as well as some of its other of its observed properties.

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