X-rays, filament activity and flare prediction

Details X-rays, filament activity and flare prediction X-rays, filament activity and flare prediction

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980soph...66..105m&link_type=abstract

Solar Physics, vol. 66, May 1980, p. 105-111.

Physics

4

Emission Spectra, Filaments, Solar Flares, Solar Spectra, Solar X-Rays, H Alpha Line, Heliometers, Oso-8, Solar Activity, X Ray Spectra

Scientific paper

One hundred twenty seven hours of high-resolution H alpha movies of young active regions have been compared with simultaneous 1.5-15 keV X-ray measurements from the Mapping X-Ray Heliometer experiment on OSO-8, with particular attention to preflare periods and to the possibility of X-ray emission associated with filament activity during that time. The period studied included eight confirmed flares or subflares, 16 unreported events of comparable magnitude, and numerous examples of filament activity. No evidence for X-ray emission from areas of enhanced filament activity was found unless simultaneous brightenings were present in H alpha. In addition, no peculiar behavior of either filaments or X-rays was detected during the period of approximately 20 min preceding these small flares, which, even in retrospect, would have allowed them to be 'predicted'.

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