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Title: Models for Gamma-Ray Bursts and Diverse Transients

Abstract

The observational diversity of ''gamma-ray bursts'' (GRBs) has been increasing, and the natural inclination is a proliferation of models. We explore the possibility that at least part of this diversity is a consequence of a single basic model for the central engine operating in a massive star of variable mass, differential rotation rate, and mass loss rate. Whatever that central engine may be--and here the collapsar is used as a reference point--it must be capable of generating both a narrowly collimated, highly relativistic jet to make the GRB, and a wide angle, sub-relativistic outflow responsible for exploding the star and making the supernova bright. To some extent, the two components may vary independently, so it is possible to produce a variety of jet energies and supernova luminosities. We explore, in particular, the production of low energy bursts and find a lower limit, {approx} 10{sup 48} erg s{sup -1} to the power required for a jet to escape a massive star before that star either explodes or is accreted. Lower energy bursts and ''suffocated'' bursts may be particularly prevalent when the metallicity is high, i.e., in the modern universe at low redshift.

Authors:
; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
897733
Report Number(s):
SLAC-PUB-12305
astro-ph/0701320; TRN: US200705%%313
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Submitted to Phil.Trans.Roy.Soc.Lond.
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; INCLINATION; PRODUCTION; PROLIFERATION; ROTATION; STARS; TRANSIENTS; UNIVERSE; Astrophysics,ASTRO

Citation Formats

Woosley, S.E., /UC, Santa Cruz, Zhang, Weiqun, and /KIPAC, Menlo Park. Models for Gamma-Ray Bursts and Diverse Transients. United States: N. p., 2007. Web. doi:10.1098/rsta.2006.1997.
Woosley, S.E., /UC, Santa Cruz, Zhang, Weiqun, & /KIPAC, Menlo Park. Models for Gamma-Ray Bursts and Diverse Transients. United States. doi:10.1098/rsta.2006.1997.
Woosley, S.E., /UC, Santa Cruz, Zhang, Weiqun, and /KIPAC, Menlo Park. Wed . "Models for Gamma-Ray Bursts and Diverse Transients". United States. doi:10.1098/rsta.2006.1997. https://www.osti.gov/servlets/purl/897733.
@article{osti_897733,
title = {Models for Gamma-Ray Bursts and Diverse Transients},
author = {Woosley, S.E. and /UC, Santa Cruz and Zhang, Weiqun and /KIPAC, Menlo Park},
abstractNote = {The observational diversity of ''gamma-ray bursts'' (GRBs) has been increasing, and the natural inclination is a proliferation of models. We explore the possibility that at least part of this diversity is a consequence of a single basic model for the central engine operating in a massive star of variable mass, differential rotation rate, and mass loss rate. Whatever that central engine may be--and here the collapsar is used as a reference point--it must be capable of generating both a narrowly collimated, highly relativistic jet to make the GRB, and a wide angle, sub-relativistic outflow responsible for exploding the star and making the supernova bright. To some extent, the two components may vary independently, so it is possible to produce a variety of jet energies and supernova luminosities. We explore, in particular, the production of low energy bursts and find a lower limit, {approx} 10{sup 48} erg s{sup -1} to the power required for a jet to escape a massive star before that star either explodes or is accreted. Lower energy bursts and ''suffocated'' bursts may be particularly prevalent when the metallicity is high, i.e., in the modern universe at low redshift.},
doi = {10.1098/rsta.2006.1997},
journal = {Submitted to Phil.Trans.Roy.Soc.Lond.},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 17 00:00:00 EST 2007},
month = {Wed Jan 17 00:00:00 EST 2007}
}