The spatial distribution of gamma-ray bursts from Pioneer Venus Orbiter

Abstract

view Abstract Citations (21) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Spatial Distribution of Gamma-Ray Bursts from Pioneer Venus Orbiter Chuang, K. W. ; White, R. S. ; Klebesadel, R. W. ; Laros, J. G. Abstract The homogeneity of the burst source population in space with the log N(greater than Pc)-log Pc and log (dN/dPc)-log Pc relations is studied on the basis of a sample of 225 observed gamma-ray bursts between September 1978 and July 1988 from the Pioneer Venus Orbiter. The relations N(greater than Pc) is approximately equal to Pc exp -1.5 and dN/dPc is approximately equal to Pc exp -2.5 are expected if the gamma bursters are uniformly distributed in space. The Kolmogorov-Smirnov statistic gives a probability of 0.93 that the observed integral distribution N(greater than Pc) is drawn from the expected uniform distribution Pc exp -1.5. A least-squares 1 standard deviation fit to the observed differential distribution yields dN/dPc of about Pc -2.42 +/- 0.07. Both are consistent with a uniform distribution in space of the parent population of burst sources. Publication: The Astrophysical Journal Pub Date: May 1992 DOI: 10.1086/171340 Bibcode: 1992ApJ...391..242C Keywords: Gamma Ray Bursts; Pioneer Venus 1 Spacecraft; Spatial Distribution; Background Radiation; Least Squares Method; Radiation Detectors; Statistical Analysis; Space Radiation; GAMMA RAYS: BURSTS; STARS: STATISTICS full text sources ADS |