Gamma Ray Burst Beaming Constraints from Afterglow Light Curves: GRB 970508

Preprint

25 March 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9903400

Abstract

The beaming angle (zeta) is the main uncertainty in gamma ray burst energy requirements today. We summarize predictions for the light curves of beamed bursts, and model the R band light curve of GRB 970508 to derive zeta > 30 degrees. This yields an irreducible minimum energy requirement of 3.4 times 10^{49} ergs to power the afterglow alone.

Keywords

BEAMING CONSTRAINTS
GAMMA RAY BURST
AFTERGLOW LIGHT
BEAMED BURSTS
UNCERTAINTY
RAY BURST
ERGS
GRB

All Related Versions

Version 1, 1999-03-25, ArXiv
Published version: Astronomy and Astrophysics Supplement Series, 138 (3), 539.

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