Discovery of intense gamma-ray flashes of atmospheric origin

Details Discovery of intense gamma-ray flashes of atmospheric origin Discovery of intense gamma-ray flashes of atmospheric origin

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9611316f&link_type=abstract

Draft Report National Aeronautics and Space Administration. Marshall Space Flight Center, Huntsville, AL.

Computer Science

Earth Atmosphere, Gamma Ray Observatory, Gamma Rays, Gas Detectors, Photons, Upper Atmosphere, Bremsstrahlung, High Energy Electrons, Thunderstorms

Scientific paper

Observations have been made of a new terrestrial phenomenon: brief (approx. millisecond), intense flashes of gamma rays, observed with space-borne detectors. These flashes must originate at altitudes in the atmosphere above at least 30 km in order to be observable by orbiting detectors aboard the Compton Gamma-Ray Observatory (CGRO). At least a dozen events have been detected over the past 2 years. The photon spectra from the events are very hard and are consistent with bremsstrahlung emission from energetic (MeV) electrons. The most likely origin of these high energy electrons, while speculative at this time, is a rare type of high altitude electrical discharge above thunderstorm regions.

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