EVIDENCE FOR GAMMA-RAY BURSTS ORIGINATING WITHIN 11-MPC

We investigate the number of gamma-ray bursts in two particular strips of the sky using the data in 3B catalog of Burst and Transient Source Experiment (BATSE). One stripe is related to the plane in which the i ntergalactic globular clusters (R > 25kpc) and Galactic satellite gala xies (45kpc < R < 280kpc) concentrate, the other is concerned to nearb y galaxies (1Mpc < R < 11Mpc). We find that the density of GRBs in the se two strips is higher than that in other parts of the sky with signi ficance 2.8 and 1.9 sigma respectively. We also compare the peak flux distribution of GRBs in these two stripes with that in other parts of the sky, and find no difference in the former stripe but a difference in the latter with a significant level alpha = 0.05. This is consisten t with the distance scales of these two planes. So it suggests that at least a substantial fraction of GRBs may be related to those objects in these two planes and thus originate within 11Mpc.