V/V(max) test applied to GINGA gamma-ray bursts

Details V/V(max) test applied to GINGA gamma-ray bursts V/V(max) test applied to GINGA gamma-ray bursts

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...383l..61o&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 383, Dec. 20, 1991, p. L61-L64.

Astronomy and Astrophysics

Astronomy

30

Gamma Ray Bursts, Ginga Satellite, Neutron Stars, Radiant Flux Density, Gamma Ray Astronomy, Spaceborne Astronomy

Scientific paper

The V/V(max) test has been applied to gamma-ray burst data from Ginga. The Ginga gamma-ray burst detector covers the relatively low energy range where most of the photons occur and thus is able to observe fainter gamma-ray bursts than previous satellites. Since the launch of the satellite in 1987, 1989 gamma-ray bursts had been detected as of the beginning of October 1990. The standard V/Vmax test has been applied to the bursts. The observed value of V/V(max) = 0.35 +/- 0.035 for bursts with more than 8.6 standard deviations above background suggests a nonuniformity in the source distribution which is consistent with a Galactic origin. Details of the present analysis and cautions concerning the derived values are discussed.

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