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The Birthplace of Gamma-Ray Bursts: Abundance Gradients and Constraints on Progenitors

Ramirez-Ruiz, Enrico and Lazzati, Davide and Blain, Andrew W. (2002) The Birthplace of Gamma-Ray Bursts: Abundance Gradients and Constraints on Progenitors. Astrophysical Journal, 565 (1). L9-L12. ISSN 1538-4357. doi:10.1086/339018.

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The physics of gamma-ray bursts (GRBs) and their offsets from the centers of their host galaxies are used to investigate the evolutionary state of their progenitors, motivated by the popular idea that GRBs are linked with the cataclysmic collapse of massive stars. We suggest that GRB progenitors in the inner and outer regions of hosts may be intrinsically different: outer bursts appear to have systematically greater isotropic equivalent energies (or narrower jets). This may provide an interesting clue to the nature of GRBs and may reflect a relation between metallicity and the evolution of GRB progenitors. If true, this offset-isotropic luminosity correlation is a strong argument for a collapsar origin of long-duration GRBs.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Ramirez-Ruiz, Enrico0000-0003-2558-3102
Lazzati, Davide0000-0002-9190-662X
Blain, Andrew W.0000-0001-7489-5167
Additional Information:© 2002. The American Astronomical Society. Received 2001 September 24; accepted 2001 December 6; published 2002 January 7. We thank G. Denicoló, N. Lloyd-Ronning, M. Pettini, M. J. Rees, C. Tout, and the referee for useful comments and suggestions. E. R.-R. acknowledges support from CONACYT, SEP, and the ORS foundation. A. W. B. thanks the Raymond and Beverly Sackler Foundation for financial support at the IoA.
Funding AgencyGrant Number
Consejo Nacional de Ciencia y Tecnología (CONACYT)UNSPECIFIED
Secretaría de Educación Pública (SEP)UNSPECIFIED
Subject Keywords:cosmology: observations; gamma rays: bursts; supernovae: general
Issue or Number:1
Record Number:CaltechAUTHORS:20170408-164406358
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Official Citation:Enrico Ramirez-Ruiz et al 2002 ApJ 565 L9
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76241
Deposited By: 1Science Import
Deposited On:09 Mar 2018 18:05
Last Modified:15 Nov 2021 16:58

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