View Full Version : gamma ray isotropy or not?

2010-Dec-09, 06:29 PM
The three classes of gamma rays.... short, medium and long duration bursts...show an odd effect. (I like odd things) The longs and the shorts are pretty isotropic, but the mediums are not. Then the question is why? SEE:http://arxiv.org/PS_cache/arxiv/pdf/1012/1012.1757v1.pdf

2010-Dec-09, 08:13 PM
... the question is why? ...
The answer would have to be one of two choices:
- sample size too small for good statistics (unlikely)
- some medium duration GRBs are lower total energy, and are observed mainly from a more local space (inside the galaxy or from nearby superclusters).

2010-Dec-12, 09:55 AM
An even more interesting question: how would one go about testing hypotheses concerning the extent of non-isotropic distributions, other than by just watching the sky longer (for all GRBs) and increasing the sensitivity of GRB detectors?