The Importance of Off-Axis Beaming in Jet Models

Details The Importance of Off-Axis Beaming in Jet Models The Importance of Off-Axis Beaming in Jet Models

2005-05-08

arxiv.org/abs/astro-ph/0505152v1

Nuovo Cim.C28:407-410,2005

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure. Poster presented at the 4th Workshop Gamma-Ray Bursts in the Afterglow Era, Rome,18-22 October 2004. Editor

Scientific paper

10.1393/ncc/i2005-10070-0

Gamma-Ray Bursts (GRBs) are widely thought to originate from collimated jets of material moving at relativistic velocities. Emission from such a jet should be visible even when viewed from outside the angle of collimation. Using Monte Carlo population synthesis methods and including the effects of this off-axis beaming, we can compare various GRB jet models against the global properties of observed bursts. We explore whether or not the X-Ray Flashes (XRFs) seen by HETE-2 and BeppoSAX can be explained as classical GRBs viewed off-axis, and begin to address the more general question of the importance of off-axis beaming in current burst samples.

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