Implications of the solar flare gamma-ray limb-brightening observations for particle acceleration and the flare magnetic environment. I - Approximate, analytical treatment

Details Implications of the solar flare gamma-ray limb-brightening observations for particle acceleration and the flare magnetic environment. I - Approximate, analytical treatment Implications of the solar flare gamma-ray limb-brightening observations for particle acceleration and the flare magnetic environment. I - Approximate, analytical treatment

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...215..371m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 215, no. 2, May 1989, p. 371-380. Research supported by SERC.

Astronomy and Astrophysics

Astronomy

19

Gamma Ray Astronomy, Limb Brightening, Particle Acceleration, Solar Flares, Solar Magnetic Field, Bremsstrahlung, Field Strength, Relativistic Electron Beams, Solar Atmosphere, Synchrotron Radiation

Scientific paper

Gamma-ray continuum limb brightening has been interpreted in terms of the transport and bremsstrahlung of relativistic electrons. A simple one-dimensional vertically stratified model of field strength and density variation in the atmosphere is employed which allows qualitative determination of the influences of atmospheric structure and accelerated particle anisotropy on the distribution of burst occurrence. Three limb-brightening mechanisms are identified: (1) the variation with viewing angle of the column depth along the line of sight; (2) the combined effects of the loss-cone and the drastic density decrease above the transition region; and (3) the relationship between the field strength and ambient density throughout the atmosphere.

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