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The Angular Power Spectrum Of Batse 3b Gamma-Ray Bursts, Max Tegmark, Dieter H. Hartmann, Michael S. Briggs, Charles A. Meegan
The Angular Power Spectrum Of Batse 3b Gamma-Ray Bursts, Max Tegmark, Dieter H. Hartmann, Michael S. Briggs, Charles A. Meegan
Publications
We compute the angular power spectrum C1 from the BATSE 3B catalog of 1122 gamma-ray burts and find no evidence of clustering on any scale. These constraints bridge the entire range from samall scales (which probe source clustering and burst repetition) to the largest scales (which constrain possible anisotropies from the Galactic hal or from nearby cosmological large-scale structures). We develop an analysis tecnique that takes the angular position errors into account. For specific clustering or repetition models, strong upper limits can be obtained down to scales l ~ 30, corresponding to abou couple of degrees on the sky. The …
Improved Limits On Gammy-Ray Burst Repetition From Batse, Max Tagmark, Dieter H. Hartmann, Michael S. Briggs, Jon Hakkila, Charles A. Meegan
Improved Limits On Gammy-Ray Burst Repetition From Batse, Max Tagmark, Dieter H. Hartmann, Michael S. Briggs, Jon Hakkila, Charles A. Meegan
Publications
We tighten previous upper limits on gamma-ray burst repetition by analyzing the angular power spectrum of the BATSE 3B catalog of 1122 bursts. At 95% confidence, we find that no more that 2% of all observed bursts can be labeled as repeaters, even if no sources are observed to repeat more than once. If a fraction f of all observed bursts can be labeled as repeaters that are observed to bursts v times each, then all models ( v - 1) f >~ 0.05 are rules out as 99% confidence, as compares to the best previous 99% limit (v - …