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e±-rich GRB Fireball and Infrared Flashes

Published online by Cambridge University Press:  26 May 2016

Zhuo Li
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210093, P. R. China
Z. G. Dai
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210093, P. R. China
T. Lu
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210093, P. R. China

Abstract

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Gamma-ray bursts (GRBs) are believed to originate from ultra-relativistic fireballs, with initial Lorentz factor η ∼ 102 − 103. However very high energy photons may still suffer from γγ interaction. We show here that in a wide range of model parameters, the resulting pairs may dominate electrons associated with the fireball baryons. This may provide an explanation for the rarity of prompt optical detections. A rapid response to the GRB trigger at the IR band would detect such a strong flash.

Type
Part 9 Gamma Ray Bursters
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Briggs, M. S., et al. 1999, ApJ, 524, 82 Google Scholar
Lithwick, Y., & Sari, R. 2001, ApJ, 555, 540 Google Scholar
Mészáros, P. 2002, ARA&A, 40, 137 Google Scholar
Sari, R., & Piran, T. 1999, ApJ, 517, L109 Google Scholar
Wang, X. Y., Dai, Z. G., & Lu, T. 2000, MNRAS, 319, 1159 Google Scholar