On the nature of the 'hostless' short GRBs

Abstract

A significant proportion ($\sim 30\%$) of the short-duration gamma-ray bursts (SGRBs) localised 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 ($z\gtrsim 1$), for which the hosts are faint, or a population where the progenitor has been kicked far from its host or is sited in an outlying globular cluster. We consider the afterglow and host observations of three 'hostless' bursts (GRBs 090305A, 091109B and 111020A), coupled with a new observational diagnostic to aid the association of SGRBs with putative host galaxies to investigate this issue. Considering the well localised SGRB sample, 7/25 SGRBs can be classified as 'hostless' by our diagnostic. Statistically, however, the proximity of these seven SGRBs to nearby galaxies is higher than is seen for random positions on the sky. This suggests that the majority of 'hostless' SGRBs have likely been kicked from proximate galaxies at moderate redshift. Though this result still suggests only a small proportion of SGRBs will be within the AdLIGO horizon for NS-NS or NS-BH inspiral detection ($z\sim 0.1$), in the particular case of GRB 111020A a plausible host candidate is at $z=0.02$.

20 pages (including Appendix), 11 figures, 7 tables (including 2 tables in the Appendix), published by MNRAS

References in corpus (19)

• An online repository of Swift/XRT light curves of GRBs
• Long gamma-ray bursts and core-collapse supernovae have different environments
• The Galaxy Population Hosting Gamma-Ray Bursts
• The optically unbiased GRB host (TOUGH) survey. I. Survey design and catalogs
• The Host Galaxies of Short-Duration Gamma-Ray Bursts: Luminosities, Metallicities, and Star Formation Rates
• Different progenitors of short hard gamma-ray bursts
• Discovery of the afterglow and host galaxy of the low redshift short GRB 080905A
• The optical afterglows and host galaxies of three short/hard gamma-ray bursts
• A Putative Early-Type Host Galaxy for GRB 060502B: Implications for the Progenitors of Short-Duration Hard-Spectrum Bursts
• Constraints on Natal Kicks in Galactic Double Neutron Star Systems
• A case of mistaken identity? GRB 060912A and the nature of the long -- short GRB divide
• The faint afterglow and host galaxy of the short-hard GRB 060121
• GRB 060121: Implications of a Short/Intermediate Duration Gamma-Ray Burst at High Redshift
• The short GRB070707 afterglow and its very faint host galaxy
• Short Gamma Ray Bursts: a bimodal origin?
• On the nature of the short duration GRB 050906
• HETE-2 Localizations and Observations of Four Short Gamma-Ray Bursts: GRBs 010326B, 040802, 051211 and 060121
• GRBs 070429B and 070714B: The High End of the Short-Duration Gamma-Ray Burst Redshift Distribution
• GRB 070707: the first short gamma-ray burst observed by INTEGRAL

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