Accession Number:
ADA199379
Title:
Directionality of Continuum Gamma Rays from Solar Flares
Descriptive Note:
Corporate Author:
STANFORD UNIV CA CENTER FOR SPACE SCIENCE AND ASTROPHYSICS
Personal Author(s):
Report Date:
1988-04-01
Pagination or Media Count:
19.0
Abstract:
The hard X-ray spectrometer total counts are used as calibration to investigate how the brightness of gamma rays above 300 keV changes as a function of the heliocentric angle of a flare. The normalized gamma-ray brightness, on the average, increases with the heliocentric angle a flare at the limb is estimated to be 13 times brighter in gamma-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.
Descriptors:
Subject Categories:
- Astrophysics