Probing the Small-scale Angular Distribution of Gamma-ray Bursts with Combined Batse/ulysses 4b Locations
نویسنده
چکیده
We investigate the angular distribution of gamma-ray bursts using the largest catalog of welllocalized events that is currently available—combined BATSE/Ulysses burst locations. We present the preliminary spatial analysis of 415 BATSE/Ulysses bursts included in the BATSE 4B catalog. We find that the locations are consistent with largeand small-scale isotropy, with no significant clustering or repetition. We also search for cross-correlation between the BATSE/Ulysses bursts and known extragalactic objects—such as Abell galaxy clusters, radio-quiet QSO, AGN and supernovae—and place limits on the fraction of bursts that could originate from these objects.
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