New limit on the size distribution of gamma-ray bursts

Details New limit on the size distribution of gamma-ray bursts New limit on the size distribution of gamma-ray bursts

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.262..370c&link_type=abstract

Nature, vol. 262, July 29, 1976, p. 370, 371.

Computer Science

Sound

10

Gamma Rays, Size Determination, X Ray Astronomy, Balloon Sounding, Balloon-Borne Instruments, Bursts, Cosmic X Rays, Distribution Functions, Luminous Intensity

Scientific paper

Data obtained with a 125-mm NaI(Tl) detector with four integral channels between 40 and 1000 keV, carried on a transatlantic balloon flight at a ceiling altitude of 3.0 g/sq cm, were analyzed to obtain an upper limit for the number of gamma-ray bursts which deposit more than about 2 times 10 to the -7th erg/sq cm in the 100-1000 keV range. Results are consistent with a size distribution of S to the -1.5 above .0004 erg/sq cm and S to the -0.5 below this energy, as determined for Vela bursts (Cowsik, 1975). A distribution function obtained from a galactic population with a Gaussian spread in intrinsic luminosities, with a break point at about .00005 erg/sq cm would also be compatible with the data.

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