Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts

Details Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts

2001-05-03

arxiv.org/abs/astro-ph/0105059v1

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1007/10853853_14

While most gamma-ray bursts (GRBs) are now believed to be from cosmological distances, the origin of very short-time GRBs is still not known. In the past, we have shown that GRBs with time duration (T90) less than 100 ms may form a separate class of GRBs based on the hardness and time distribution of these events. We have also shown that the ln N ln S distribution is consistent with the expectation of quasi-Euclidean distribution of sources. In this paper, we report the study of the angular location of these GRBs showing a strong deviation from isotropy within the Galactic coordinates of plus 180 degrees < longitude < 90 degrees and -30 degrees < latitude < 30 degrees. We have studied the rest of the GRBs and do not find a similar deviation. This further indicates that the very-short GRBs likely form a separate class of GRBs, most probably from sources of Galactic or near solar origin.

Affiliated with

Also associated with

No associations

Rating

Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-477276