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

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.4703d&link_type=abstract

American Astronomical Society Meeting 206, #47.03; Bulletin of the American Astronomical Society, Vol. 37, p.502

Astronomy and Astrophysics

Astronomy

Scientific paper

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. This research was supported in part by NASA Contract NSAW-4690 and NASA Grant NAG5-10759.

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