Spherical Harmonic Analysis of the Angular Distribution of Gamma-Ray   Bursts
  We compute the angular power spectrum C_l of the BATSE 3B catalog, and find no evidence for clustering on any scale. These constraints bridge the entire range from small scales, probing source clustering and repetition, to large scales constraining possible Galactic anisotropies, or those from nearby cosmological large scale structures. 
Max Tegmark, Dieter Hartmann, Michael Briggs & Charles Meegan