On the nature of the 'hostless' short GRBs

R L Tunnicliffe,Andrew J Levan,Nial R Tanvir,A Rowlinson,Daniel A Perley,J S Bloom, S B Cenko,Paul T Obrien,Bethany Elisa Cobb,K Wiersema,Daniele Malesani,A De Ugarte Postigo,Jens Hjorth,Johan Peter Uldall Fynbo,Pall Jakobsson

Monthly Notices of the Royal Astronomical Society（2014）

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摘要

A significant proportion (∼30 per cent) of the short-duration gamma-ray bursts (SGRBs) localized by Swift have no detected host galaxy coincident with the burst location to deep limits, and also no high-likelihood association with proximate galaxies on the sky. These SGRBs may represent a population at moderately high redshifts (z ≳ 1), for which the hosts are faint, or a population where the prog...

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techniques: photometric,gamma-ray burst: individual: 090305A,gamma-ray burst: individual: 091109B,gamma-ray burst: individual: 110112A,gamma-ray burst: individual: 111020A,stars: neutron

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