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

Abstract

view Abstract Citations (32) References (27) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS V/V max Test Applied to GINGA Gamma-Ray Bursts Ogasaka, Y. ; Murakami, T. ; Nishimura, J. ; Yoshida, A. ; Fenimore, E. E. Abstract 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. Publication: The Astrophysical Journal Pub Date: December 1991 DOI: 10.1086/186241 Bibcode: 1991ApJ...383L..61O Keywords: Gamma Ray Bursts; Ginga Satellite; Neutron Stars; Radiant Flux Density; Gamma Ray Astronomy; Spaceborne Astronomy; Astrophysics; GAMMA RAYS: BURSTS; STARS: NEUTRON full text sources ADS |