Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-23T16:26:03.748Z Has data issue: false hasContentIssue false

GRB 100816A and the nature of intermediate duration gamma-ray bursts

Published online by Cambridge University Press:  05 September 2012

Rachel L. Tunnicliffe
Affiliation:
Department of Physics, University of Warwick, Coventry, CV4 7AL, UK email: [email protected]
Andrew Levan
Affiliation:
Department of Physics, University of Warwick, Coventry, CV4 7AL, UK email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Gamma-ray bursts are normally split into two classes, primarily determined by their observed duration, so called long (> 2s) and short (< 2s) GRBs. There have been many claims of a third duration class, with emission lasting for intermediate periods between 2 - 5s, although the reality of this class remains controversial. Here, we investigate this further utilising the 2.9s duration, spectrally hard GRB 100816A. This burst lies well offset from its host galaxy, has no evidence for an associated supernova (albeit to only moderately constraining limits), and has properties which appear to be genuinely intermediate between long- and short- population bursts. We extend this analysis by comparing the physical locations of a population of intermediate duration GRBs with those of short-GRBs and long-GRBs, concluding that the intermediate sample is indistinguishable from the long-GRB population, whose locations are very different from other transients.

Type
Poster Papers
Copyright
Copyright © International Astronomical Union 2012

References

de Ugarte Postigo, A. et al. 2010, A&A, 525, 109Google Scholar
Amati, L. et al. 2002, A&A, 390, 81Google Scholar
Kann, D. A. et al. 2010, ApJ, 720, 1513CrossRefGoogle Scholar
Kann, D. A. et al. 2011, ApJ, 734, 96CrossRefGoogle Scholar
Fruchter, A. S. et al. 2006, Nature, 441, 463CrossRefGoogle Scholar
Fong, W., Berger, E., & Fox, D. B. 2009, ApJ, 708, 9CrossRefGoogle Scholar