Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-02-21
Astronomy and Astrophysics
Astrophysics
12 pages, 6 figures, talk given at "Compact Stars in the QCD Phase Diagram", NORDITA and Niels Bohr Institute, Copenhagen, 15-
Scientific paper
According to the fireball model GRBs are produced when a relativistic flow is dissipated by shocks. The questions how does a GRB's "inner engine" accelerates and collimated the relativistic flow is today the most interesting (and most difficult) open question concerning GRBs. We summarize, here, the known constrains on the "inner engines". These constrains arise mostly from the temporal structure seen in the light curves of GRBs. We discuss the well-known NO GO theorem: An explosive source cannot produce a variable GRB. We show that various attempts to find a way around this theorem are rules out by new observational data: similarity between pulse width and pulse intervals and a correlation between a pulse and the preceding interval. We show that a simple toy model explains these features in terms of the internal shocks model. We discuss the implications of these findings to GRBs' inner engines.
Nakar Ehud
Piran Tsvi
No associations
LandOfFree
How to Construct a GRB Engine? 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 How to Construct a GRB Engine?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and How to Construct a GRB Engine? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-339713