Are Gamma-Ray Bursts Indeed Correlated with Abell Clusters of Galaxies?

Details Are Gamma-Ray Bursts Indeed Correlated with Abell Clusters of Galaxies? Are Gamma-Ray Bursts Indeed Correlated with Abell Clusters of Galaxies?

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...483l..83g&link_type=abstract

Astrophysical Journal Letters v.483, p.L83

Astronomy and Astrophysics

Astronomy

9

Gamma Rays: Bursts, Galaxies: Clusters: General, Methods: Statistical

Scientific paper

We study the possible correlation of a selected sample of 87 gamma-ray bursts that can be localized to <=6 deg2 with 3616 Abell clusters of galaxies (with |b| > 30 deg) for which we have determined angular sizes. The intention is to confirm whether the bursts are related to Abell clusters of galaxies, as has been claimed by researchers who found a 95% confidence level correlation between Abell clusters and a subsample of 136 events from the BATSE 3B catalog. We find no correlation between the positions of gamma-ray bursts and those of Abell clusters. In fact, the number of observed events toward Abell clusters is even smaller than that expected to occur at random.

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