Jj. Brainerd, AN ESTIMATE OF THE MOTION-INDUCED DIPOLE-MOMENT IN THE SPATIAL-DISTRIBUTION OF COSMOLOGICAL GAMMA-RAY BURSTS, The Astrophysical journal, 456(2), 1996, pp. 449-450
If gamma-ray bursts have a cosmological redshift of order unity, then
their distribution on the sky has a motion-induced dipole moment of 0.
0019. One must have a sample on the order of 10(6) gamma-ray bursts to
make this dipole moment larger than a 3 sigma statistical fluctuation
.