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IDENTIFYING THE LOCATION IN THE HOST GALAXY OF THE SHORT GRB 111117A WITH THE CHANDRA SUBARCSECOND POSITION
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2013 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 766, no 1, 41- p.Article in journal (Refereed) Published
Abstract [en]

We present our successful Chandra program designed to identify, with subarcsecond accuracy, the X-ray afterglow of the short GRB 111117A, which was discovered by Swift and Fermi. Thanks to our rapid target of opportunity request, Chandra clearly detected the X-ray afterglow, though no optical afterglow was found in deep optical observations. The host galaxy was clearly detected in the optical and near-infrared band, with the best photometric redshift of z = 1.31(-0.23)(+0.46) (90% confidence), making it one of the highest known short gamma-ray burst ( GRB) redshifts. Furthermore, we see an offset of 1.0 +/- 0.2 arcsec, which corresponds to 8.4 +/- 1.7 kpc, between the host and the afterglow position. We discuss the importance of using Chandra for obtaining subarcsecond X-ray localizations of short GRB afterglows to study GRB environments.

Place, publisher, year, edition, pages
2013. Vol. 766, no 1, 41- p.
Keyword [en]
gamma-ray burst: individual (GRB 111117A)
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-89559DOI: 10.1088/0004-637X/766/1/41ISI: 000316054000041OAI: oai:DiVA.org:su-89559DiVA: diva2:619122
Funder
Swedish Research Council, 623-2011-7117
Note

AuthorCount:34;

Available from: 2013-05-02 Created: 2013-04-29 Last updated: 2017-12-06Bibliographically approved

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Leloudas, Georgios
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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