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Short duration gamma-ray burst with extendedemission

Published online by Cambridge University Press:  22 July 2013

A. Pozanenko  and
M. Barkov
A. Pozanenko
Affiliation:
Space Research Institute of the Russian Academy of Sciences, Moscow, Russia. e-mail: [email protected]
M. Barkov
Affiliation:
Space Research Institute of the Russian Academy of Sciences, Moscow, Russia. e-mail: [email protected] Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
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Abstract

Assuming that the extended emission (EE) with broad dynamic range is a common property ofshort duration bursts, we propose a two-jet model which can describe both short mainepisode of hard spectra emission, specific for short bursts, and softer spectra EE by thedifferent off axis position of the observer. The model involves a short-duration jet,which is powered by heating due to νν̅ annihilation, and a long-lived Blandford–Znajek (BZ)jet with a significantly narrow opening angle. We also discuss observational tests oftwo-jet model.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 61: Gamma-ray Bursts: 15 Years of GRB Afterglows – Progenitors, Environments and Host Galaxies from the Nearby to the Early Universe , 2013 , pp. 319 - 323
Copyright
© EAS, EDP Sciences 2013

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