Physics
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.1706a&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #17.06; Bulletin of the American Astronomical Society, Vol. 32, p.1432
Physics
Scientific paper
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.
Abazajian Kev
Fuller George M.
Pruet Jason
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