Max Tegmark's cosmology library: repeaters
here (Europe) or
100K compressed version of the paper, including all the figures
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other research of mine.
IMPROVED LIMITS ON GAMMA RAY BURST REPETITION
Dieter H. Hartmann,
Michael S. Briggs, Jon Hakkila & Charles A. Meegan
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 than
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 burst v times each,
then all models with (v-1)f>0.05 are ruled out
at 99% confidence, as compared to the
best previous 99% limit (v-1)f>0.27.
At 95% confidence, our new limit
Thus even a cluster of 6 events from a single source
would have caused excess power above that present in the 3B catalog.
We conclude that the current BATSE data are consistent with no repetition
of classical gamma ray bursts, and that any repeater model is severely
constrained by the near perfect isotropy of their angular distribution.
Published in ApJ, 466, 757-763 (1996)
This site also contains the latest versions of a paper that is referenced in
Tegmark, Hartmann, Briggs & Meegan 1995 ("THBM95").
You can find many of the referenced papers from the BATSE team
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This page was last modified July 1, 1998.