Gamma-ray measurements from the Space Shuttle during a solar flare

Details Gamma-ray measurements from the Space Shuttle during a solar flare Gamma-ray measurements from the Space Shuttle during a solar flare

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992adspr..12..331h&link_type=abstract

(Life sciences and space research XXIV/2/ - Radiation biology; Proceedings of the Topical Meeting of the Interdisciplinary Scien

Astronomy and Astrophysics

Astronomy

1

Gamma Rays, Radiation Measurement, Satellite Observation, Solar Flares, Solar Protons, Earth Orbital Environments, Magnetic Flux, X Ray Astronomy

Scientific paper

An X2/2B level solar flare occurred on 12 August, 1989, during the last day of the flight of the Space Shuttle Columbia (STS-28). Detectors on the GOES 7 satellite observed increased X-ray fluxes at approximately 1400 GMT and a solar particle event at approximately 1600 GMT. Measurements with the bismuth germanate detector of the Shuttle Activation Monitor experiment on STS-28 showed factors of two to three increases in count rates at high latitudes comparable to those seen during South Atlantic Anomaly passages beginning at about 1100 GMT. That increased activity was observed at both north and south high latitudes in the 57-deg, 300-kilometer orbit and continued until the detector was turned off at 1800 GMT. Measurements made earlier in the flight over the same geographic coordinates did not produce the same levels of activity. This increase in activity may not be entirely accounted for by observed geomagnetic phenomena which were not related to the solar flare.

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