Bloom, Joshua S. and Kulkarni, Shrinivas R. (2001) The Observed Offset Distribution of GRBs about Their Hosts. In: Gamma-Ray Bursts in the Afterglow Era. ESO Astrophysics Symposia. Springer-Verlag , Berlin/Heidelberg, pp. 209-211. ISBN 978-3-540-42771-1. https://resolver.caltech.edu/CaltechAUTHORS:20190826-124739149
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Abstract
We summarize the results of a comprehensive survey to measure the location of 20 cosmological gamma-ray bursts (GRBs) in and around galaxies. We find that all well-localized GRBs to-date fall within 1.2 arcsec (10 kpc in projection) from the nearest detected galaxy. We estimate on statistical grounds that most if not all of these nearby “host” galaxies are indeed physically associated with the respective GRB and not a spurious superposition. The observed distribution of GRBs offsets about their hosts are consistent with a progenitor population that burst near the sites of massive star formation (eg. “collapsars”) and inconsistent with the modeled location of degenerate binary systems (eg. neutron-star-neutron-star and neutron-star-black-hole mergers) which travel far from their birthsite.
| Item Type: | Book Section | |||||||||
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| Additional Information: | © Springer-Verlag Berlin Heidelberg 2001 | |||||||||
| Subject Keywords: | Star Formation; Host Galaxy; Galaxy Star Formation; Massive Star Formation; Star Formation Model | |||||||||
| Series Name: | ESO Astrophysics Symposia | |||||||||
| Record Number: | CaltechAUTHORS:20190826-124739149 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190826-124739149 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 98231 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 26 Aug 2019 21:49 | |||||||||
| Last Modified: | 06 May 2020 22:48 |
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