Directionality of continuum gamma rays from solar flares

Details Directionality of continuum gamma rays from solar flares Directionality of continuum gamma rays from solar flares

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334.1049b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 15, 1988, p. 1049-1053.

Astronomy and Astrophysics

Astrophysics

14

Continuous Radiation, Directivity, Gamma Rays, Solar Flares, Solar Radiation, Electron Distribution, Limb Brightening, Solar Limb, Solar X-Rays

Scientific paper

Using hard X-ray burst spectrometer total counts as calibration, the author investigates how the brightness of γ-rays above 300 keV changes as a function of the heliocentric angle of a flare. The normalized γ-ray brightness, on the average, increases with the heliocentric angle; a flare at the limb is estimated to be 13 times brighter in γ-rays than a similar flare near the central meridian. Both pancake-like electron distributions and downward beam distributions can be adjusted to produce the deduced limb brightening.

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