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Different progenitors of short hard gamma-ray bursts

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journal contribution
posted on 24.10.2012, 09:16 by E. Troja, A. R. King, P. T. O'Brien, N. Lyons, G. Cusumano
We consider the spatial offsets of short hard gamma-ray bursts (SHBs) from their host galaxies. We show that all SHBs with extended-duration soft emission components lie very close to their hosts. We suggest that neutron star–black hole binary mergers offer a natural explanation for the properties of this extended-duration/low-offset group. SHBs with large offsets have no observed extended emission components and are less likely to have an optically detected afterglow, properties consistent with neutron star–neutron star binary mergers occurring in low-density environments.

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Citation

Monthly Notices of the Royal Astronomical Society: LETTERS, 2008, 385 (1)

Version

VoR (Version of Record)

Published in

Monthly Notices of the Royal Astronomical Society: LETTERS

Publisher

Royal Astronomical Society (RAS)

issn

1745-3933

Copyright date

2008

Available date

24/10/2012

Publisher version

http://mnrasl.oxfordjournals.org/content/385/1/L10

Language

en

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