The Spatial Distribution of GammaRay Bursts from Pioneer Venus Orbiter
Abstract
The homogeneity of the burst source population in space with the log N(greater than P_{c)log} P_{c} and log (dN/dP_{c)log} P_{c} relations is studied on the basis of a sample of 225 observed gammaray bursts between September 1978 and July 1988 from the Pioneer Venus Orbiter. The relations N(greater than P_{c)} is approximately equal to P_{c} exp 1.5 and dN/dP_{c} is approximately equal to P_{c} exp 2.5 are expected if the gamma bursters are uniformly distributed in space. The KolmogorovSmirnov statistic gives a probability of 0.93 that the observed integral distribution N(greater than P_{c)} is drawn from the expected uniform distribution P_{c} exp 1.5. A leastsquares 1 standard deviation fit to the observed differential distribution yields dN/dP_{c} of about P_{c} 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