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Using jet breaks to estimate GRB distances

Published online by Cambridge University Press:  12 May 2006

P. Ward ,
E. J. A. Meurs  and
C. del Burgo
P. Ward
Affiliation:
Dunsink Observatory, Castleknock, Dublin 15, Ireland
E. J. A. Meurs
Affiliation:
Dunsink Observatory, Castleknock, Dublin 15, Ireland
C. del Burgo
Affiliation:
Dunsink Observatory, Castleknock, Dublin 15, Ireland
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Abstract

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Recent observations have suggested that the true energy release of GRBs is potentially far less than previously thought. This is due to beaming, a signature of which is a broadband break in the power-law decay of the afterglow emission. Taking these results we have constructed a basic distance estimator, which may be useful as a diagnostic tool for the large amount of GRBs without a spectroscopically measured redshift.

Keywords

gamma rays: burstscosmology: distance scale
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S230: Populations of High Energy Sources in Galaxies , August 2005 , pp. 246 - 247
Copyright
2006 International Astronomical Union