The Link Between Neutrons, the Weak Interaction, and the Gamma-Ray Burst Baryon-Loading Problem
Abstract
Here we describe a surprising link between the weak-interaction and neutrino physics deep within the Gamma-Ray Burst (GRB) central engine and the acceleration of the fireball which produces the γ -rays. In particular, we discuss how the baryon loading problem in GRB fireballs depends on whether the baryons are neutrons or protons. It is found that a large neutron excess can result in a reduced transfer of energy from relativistic particles to baryons in the fireball. In turn, this implies that the final Lorentz factor of the fireball can be increased significantly for a given initial energy input. This raises the possibility that observed electromagnetic or neutrino signatures could give key clues into the weak-interaction history of fireballs which, in turn, could give unique insights into the nature of GRBs.
- Publication:
-
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 2000
- Bibcode:
- 2000AAS...197.1706A