EVIDENCE OF EXTENDED EMISSION IN GRB 181123B AND OTHER HIGH-REDSHIFT SHORT GRBS

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dc.contributor.authorDichiara, S.
dc.contributor.authorTroja, E.
dc.contributor.authorBeniamini, P.
dc.contributor.authorO'Connor, B.
dc.contributor.authorMoss, M.
dc.contributor.authorLien, Amy
dc.contributor.authorRicci, R.
dc.contributor.authorAmati, L.
dc.contributor.authorRyan, G.
dc.contributor.authorSakamoto, T.
dc.date.accessioned2021-03-25T18:44:09Z
dc.date.available2021-03-25T18:44:09Z
dc.description.abstractWe study the high-energy properties of GRB 181123B, a short gamma-ray burst (sGRB) at redshift z≈1.75. We show that, despite its nominal short duration with T90 < 2 s, this burst display evidence of a temporally extended emission (EE) at high energies and that the same trend is observed in the majority of sGRBs at z > 1. We discuss the impact of instrumental selection effects on the GRB classification, stressing that the measured T90 is not an unambiguous indicator of the burst physical origin. By examining their environment (e.g. stellar mass, star formation, offset distribution), we find that these high-z sGRBs share many properties of long GRBs at a similar distance and are consistent with a short-lived progenitor system. If produced by compact binary mergers, these sGRBs with EE may herald a larger population of sGRBs in the early universe.en_US
dc.description.sponsorshipThis work was supported in part by the National Aeronautics and Space Administration through grant 80NSSC18K0429 issued through the Astrophysics Data Analysis Program. The research of PB was funded by the Gordon and Betty Moore Foundation through Grant GBMF5076. This publication made use of data products supplied by the UK Swift Science Data Centre at the University of Leicester.en_US
dc.description.urihttps://arxiv.org/abs/2103.02558en_US
dc.format.extent10 pagesen_US
dc.genrejournal articles preprintsen_US
dc.identifierdoi:10.13016/m2pc2u-1zbn
dc.identifier.citationS. Dichiara, E. Troja, P. Beniamini, B. O'Connor, M. Moss, A.Y. Lien, R. Ricci, L. Amati, G. Ryan and T. Sakamoto, Evidence of extended emission in GRB 181123B and other high-redshift short GRBs, https://arxiv.org/abs/2103.02558en_US
dc.identifier.urihttp://hdl.handle.net/11603/21222
dc.language.isoen_USen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleEVIDENCE OF EXTENDED EMISSION IN GRB 181123B AND OTHER HIGH-REDSHIFT SHORT GRBSen_US
dc.typeTexten_US

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