Probing the Small-Scale Angular Distribution of Gamma-Ray Bursts with   Combined BATSE/Ulysses 4B Locations
  We investigate the angular distribution of gamma-ray bursts using the largest catalog of well-localized 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 large- and 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. 
R. M. Kippen (1 and 2), K. Hurley (3), and G. N. Pendleton (1 and 2)   ((1) University of Alabama in Huntsville, (2) NASA/Ma...