English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the results of an extensive radio-continuum observing campaign ofhost galaxies of short gamma-ray bursts (GRBs). The goal of this survey was tosearch for optically obscured star formation, possibly indicative of apopulation of young short-GRB progenitors. Our sample comprises the hosts andhost-galaxy candidates of 16 short-GRBs from 2005 to 2015, corresponding toroughly 1/3 of the presently known ensemble of well-localized short bursts.Eight GRB fields were observed with ATCA (at 5.5 and 9.0 GHz), and eight fieldswith the VLA (mostly at 5.5 GHz). The observations typically achieved a1-sigma_rms of 5 to 8 microJy. In most cases they were performed years afterthe corresponding burst. No new short-GRB host with optically obscured starformation was found. Only one host galaxy was detected, the one of GRB 100206Aat z=0.407. However, its starburst nature was already known from optical/IRdata. Its measured radio flux can be interpreted as being due to a starformation rate (SFR) of about 60 M_sol/yr. This is in good agreement withearlier expectations based on the observed broad-band spectral energydistribution of this galaxy. The 15 non-detections constrain the SFRs of thesuspected host galaxies and provide upper limits on late-time luminosities ofthe associated radio afterglows and predicted kilonova radio flares. Thenon-detection of radio emission from GRB explosion sites confirms theintrinsically low luminosity of short-GRB afterglows and places significantconstraints on the parameter space of magnetar-powered radio flares. Luminousradio flares from fiducial massive magnetars have not been found.

Deep ATCA and VLA radio observations of short-GRB host galaxies. Constraints on star-formation rates, afterglow flux, and kilonova radio flares