Search for gamma ray bursts with coincident balloon flights

Details Search for gamma ray bursts with coincident balloon flights Search for gamma ray bursts with coincident balloon flights

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7714977c&link_type=abstract

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Computer Science

Sound

Balloon-Borne Instruments, Cosmic Rays, Gamma Rays, Radiation Spectra, Balloon Sounding, Histograms, Photon Density, Radiation Counters

Scientific paper

A search was conducted for cosmic gamma ray bursts of small size and of sufficient frequency of occurrence to be detected during a one day observation program. Two similar detectors, successfully balloon-borne from launch sites in South Dakota and Texas, achieved about 20 hours of simultaneous operation at several millibars atmospheric depth, with continuous separation of over 1,500 km. Fluctuations of the counting rates of less than 150 keV photons with temporal structures from microseconds to several minutes were compared in order to detect coincident or associated responses from the two instruments. No coincident gamma-ray burst events were detected. The resulting integral size spectrum of small bursts, from this and from all other searches, remains a spectrum of upper limits, consistent with an extrapolation of the size spectrum of the largest known bursts, fitting a power low of index -1.5.

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