Angular clustering properties of gamma-ray bursts and quantitative constraints on their distances

Details Angular clustering properties of gamma-ray bursts and quantitative constraints on their distances Angular clustering properties of gamma-ray bursts and quantitative constraints on their distances

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342..521h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 1, 1989, p. 521-526. Research supported by the University of Cali

Statistics

Computation

38

Angular Distribution, Computational Astrophysics, Gamma Ray Bursts, Universe, Astronomical Catalogs, Covariance, Distance, Extraterrestrial Radiation

Scientific paper

Upper limits on the angular correlation function, w(theta), of gamma-ray bursts are obtained which constrain the sources to be very nearby or very distant. The angular clustering properties of the sources in two recent gamma-ray burst catalogs (Golenetskii et al., 1986 and Atteia et al., 1987) have been derived by determining their two-point w(theta) values, and the correlations of both data sets are consistent with w(theta) = 0. It is shown that if the spatial correlation of gamma-ray bursts resembles that of galaxies or galactic clusters, present gamma-ray burst catalogs must be complete to distances in excess of 100 Mpc, while if gamma-ray bursts are associated with a Galactic disk population, then the upper limits on w(theta) constrain the sampling depth to less than two disk scale heights.

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