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dc.contributor.authorTanvir, N.
dc.contributor.authorRol, E.
dc.contributor.authorLevan, A.
dc.contributor.authorSvensson, K.
dc.contributor.authorFruchter, A.S.
dc.contributor.authorGranot, J.
dc.contributor.authorO'Brien, P.T.
dc.contributor.authorWiersema, K.
dc.contributor.authorStarling, R.L.
dc.contributor.authorJakobsson, P.
dc.contributor.authorFynbo, J.
dc.contributor.authorHjorth, J.
dc.contributor.authorCurran, P.
dc.contributor.authorvan der Horst, A.J.
dc.contributor.authorKouveliotou, C.
dc.contributor.authorRacusin, J.L.
dc.contributor.authorBurrows, D.N.
dc.contributor.authorGenet, F.
dc.identifier.citationTanvir , N , Rol , E , Levan , A , Svensson , K , Fruchter , A S , Granot , J , O'Brien , P T , Wiersema , K , Starling , R L , Jakobsson , P , Fynbo , J , Hjorth , J , Curran , P , van der Horst , A J , Kouveliotou , C , Racusin , J L , Burrows , D N & Genet , F 2010 , ' Late-time observations of GRB 080319B: jet break, host galaxy and accompanying supernova ' , The Astrophysical Journal , vol. 725 , no. 1 , pp. 625-632 .
dc.identifier.otherPURE: 159008
dc.identifier.otherPURE UUID: 550aec66-e382-4bb8-ac58-5cb650f395d4
dc.identifier.otherdspace: 2299/5086
dc.identifier.otherScopus: 78649994547
dc.descriptionOriginal article can be found at: Copyright American Astronomical Society [Full text of this article is not available in the UHRA]
dc.description.abstractThe Swift-discovered GRB 080319B was by far the most distant source ever observed at naked-eye brightness, reaching a peak apparent magnitude of 5.3 at a redshift of z = 0.937. We present our late-time optical (Hubble Space Telescope, Gemini, and Very Large Telescope) and X-ray (Chandra) observations, which confirm that an achromatic break occurred in the power-law afterglow light curve at ~11 days post-burst. This most likely indicates that the gamma-ray burst (GRB) outflow was collimated, which for a uniform jet would imply a total energy in the jet E jet 1052 erg. Our observations also show a late-time excess of red light, which is well explained if the GRB was accompanied by a supernova (SN), similar to those seen in some other long-duration GRBs. The latest observations are dominated by light from the host and show that the GRB took place in a faint dwarf galaxy (r(AB) 27.0, rest frame MB –17.2). This galaxy is small even by the standards of other GRB hosts, which is suggestive of a low-metallicity environment. Intriguingly, the properties of this extreme event—a small host and bright SN—are entirely typical of the very low luminosity bursts such as GRB 980425 and GRB 060218.en
dc.relation.ispartofThe Astrophysical Journal
dc.titleLate-time observations of GRB 080319B: jet break, host galaxy and accompanying supernovaen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

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