Emission from Bow Shocks of Beamed Gamma-Ray Bursts

Details Emission from Bow Shocks of Beamed Gamma-Ray Bursts Emission from Bow Shocks of Beamed Gamma-Ray Bursts

2000-09-29

arxiv.org/abs/astro-ph/0009501v1

Astronomy and Astrophysics

Astrophysics

ApJ, submitted, 15 pages, 3 figures

Scientific paper

10.1086/320451

Beamed gamma-ray burst (GRB) sources produce a bow shock in their gaseous environment. The emitted flux from this bow shock may dominate over the direct emission from the jet for lines of sight which are outside the angular radius of the jet emission, theta. The event rate for these lines of sight is increased by a factor of 260*(theta/5_degrees)^{-2}. For typical GRB parameters, we find that the bow shock emission from a jet with half-angle of about 5 degrees is visible out to tens of Mpc in the radio and hundreds of Mpc in the X-rays. If GRBs are linked to supernovae, studies of peculiar supernovae in the local universe should reveal this non-thermal bow shock emission for weeks to months following the explosion.

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