Nonthermal processes in flaring X-ray-bright points

Details Nonthermal processes in flaring X-ray-bright points Nonthermal processes in flaring X-ray-bright points

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...427l..59k&link_type=abstract

Astrophysical Journal, Part 2 - Letters, vol. 427, no. 1, p. L59-L62

Astronomy and Astrophysics

Astronomy

19

Gamma Rays, Nonthermal Radiation, Solar Flares, Solar Physics, Solar Radio Emission, Solar X-Rays, Sun, X Ray Astronomy, X Ray Sources, Position Sensing, Radio Frequencies, Spectroheliographs

Scientific paper

X-ray-bright point (XBPs) are known to show variability on a number of timescales, including impulsive X-ray brightenings. The relationship between these XBP 'flares' and normal solar flares is poorly known. A fundamental question is whether nonthermal acceleration of particles takes place in XBP flares. We address this issue by searching for nonthermal radio emission at metric wavelengths from flaring XBPs identified in Yohkoh soft x-ray telescope (SXT) data. Unequivocal evidence for type III-like radio bursts, usually attributed to beams of nonthermal electrons on open field lines, is found. This suggests that XBP flares are similar to normal flares and can indeed accelerate nonthermal populations of energetic particles.

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