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

Journal Article · Fri May 01 00:00:00 EDT 1992 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/171340· OSTI ID:7106981

Chuang, K W; White, R S; Klebesadel, R W; Laros, J G ^[1]

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1. California, University, Riverside (United States) Los Alamos National Laboratory, NM (United States)

The homogeneity of the burst source population in space with the log N(greater than P sub c)-log P sub c and log (dN/dP sub c)-log P sub c 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 P sub c) is approximately equal to P sub c exp -1.5 and dN/dP sub c is approximately equal to P sub c 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 P sub c) is drawn from the expected uniform distribution P sub c exp -1.5. A least-squares 1 standard deviation fit to the observed differential distribution yields dN/dP sub c of about P sub c -2.42 +/- 0.07. Both are consistent with a uniform distribution in space of the parent population of burst sources. 28 refs.

• OSTI ID: 7106981
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 391:1; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
COSMIC GAMMA BURSTS
COSMIC RADIATION
DISTRIBUTION
IONIZING RADIATIONS
LEAST SQUARE FIT
MATHEMATICS
MAXIMUM-LIKELIHOOD FIT
MEASURING INSTRUMENTS
NUMERICAL SOLUTION
PRIMARY COSMIC RADIATION
RADIATION DETECTORS
RADIATIONS
SPACE VEHICLES
SPATIAL DISTRIBUTION
STATISTICS
VEHICLES