Observations of cosmic gamma-ray bursts with IMP-7: Evidence for a single spectrum

Details Observations of cosmic gamma-ray bursts with IMP-7: Evidence for a single spectrum Observations of cosmic gamma-ray bursts with IMP-7: Evidence for a single spectrum

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ocgb.book.....c&link_type=abstract

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Physics

Cosmic Rays, Gamma Rays, Imp, Spectrum Analysis, Bursts, Photons, Radiation Detectors, Satellite Observation

Scientific paper

Spectral observation of nine recent cosmic gamma-ray bursts are reported. The average photon number spectra of all nine events are shown to be consistent with a 150-keV exponential from 100 keV to about 400 keV, and a power law of index -2.5 from 400 keV to 1100 keV. The observations also indicate an event rate of 16 in 1972 and 1973, or 8 + or - 2 per year, higher than the 5 + or - 1 per year initially reported. This corresponds to an approximately 40-percent lower effective intensity threshold, attained by using more sensitive detectors in multiple-satellite coincidence.

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