A search for cosmic gamma-ray bursts with a balloon-borne NaI/T1/ scintillation crystal

Details A search for cosmic gamma-ray bursts with a balloon-borne NaI/T1/ scintillation crystal A search for cosmic gamma-ray bursts with a balloon-borne NaI/T1/ scintillation crystal

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..42...35j&link_type=abstract

(COSPAR, Symposium on Fast Transients in X- and Gamma-Rays, Varna, Bulgaria, May 29-31, 1975.) Astrophysics and Space Science, v

Computer Science

Sound

15

Balloon Sounding, Balloon-Borne Instruments, Cosmic X Rays, Scintillation Counters, Sodium Iodides, X Ray Astronomy, Bursts, Gamma Rays, Radiant Flux Density, X Ray Density Measurement, X Ray Sources

Scientific paper

A search has been made for gamma-ray bursts in 15 hours of data obtained from a balloon- borne gamma-ray detector on 10 October and 21 October, 1970. The event rate for photon energy losses in the 0.1-0.4 MeV range from the 13-in, diameter by 6-in, thick NaI(T1) scintillation crystal was examined for statistically significant fluctuations as an indication of gamma-ray bursts. Searches of the data were made with time resolutions varying from 2 ms to 64 s. Four statistically significant bursts were detected and are considered as possible cosmic gamma-ray burst events. The characteristic duration of all four of the observed events is 100 ms. Similar events can be generated in the laboratory following an extremely large ~ 1O~ GeV) thirty ns X-ray energy deposition in the NaI(T1) crystal. The implications of these short duration, low intensity events, if valid gamma-ray bursts, are discussed

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