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dc.contributor.authorTanvir, Nial R.-
dc.contributor.authorFox, D. B.-
dc.contributor.authorLevan, A. J.-
dc.contributor.authorBerger, E.-
dc.contributor.authorWiersema, K.-
dc.contributor.authorFynbo, J. P. U.-
dc.contributor.authorCucchiara, A.-
dc.contributor.authorKrühler, T.-
dc.contributor.authorGehrels, N.-
dc.contributor.authorBloom, J. S.-
dc.contributor.authorGreiner, J.-
dc.contributor.authorEvans, P. A.-
dc.contributor.authorRol, Evert-
dc.contributor.authorOlivares, F.-
dc.contributor.authorHjorth, J.-
dc.contributor.authorJakobsson, P.-
dc.contributor.authorFarihi, J.-
dc.contributor.authorWillingale, R.-
dc.contributor.authorStarling, Rhaana L. C.-
dc.contributor.authorCenko, S. B.-
dc.contributor.authorPerley, Daniel-
dc.contributor.authorMaund, Justyn R.-
dc.contributor.authorDuke, J.-
dc.contributor.authorWijers, Ralph A. M. J.-
dc.contributor.authorAdamson, A. J.-
dc.contributor.authorAllan, A.-
dc.contributor.authorBremer, M.-
dc.contributor.authorBurrows, D. N.-
dc.contributor.authorCastro-Tirado, Alberto J.-
dc.contributor.authorCavanagh, B.-
dc.contributor.authorUgarte Postigo, Antonio de-
dc.contributor.authorDopita, M. A.-
dc.contributor.authorFatkhullin, T. A.-
dc.contributor.authorFruchter, A. S.-
dc.contributor.authorFoley, R. J.-
dc.contributor.authorGorosabel, Javier-
dc.contributor.authorKennea, J. A.-
dc.contributor.authorKerr, T.-
dc.contributor.authorKlose, Sylvio-
dc.contributor.authorKrimm, H. A.-
dc.contributor.authorKomarova, V. N.-
dc.contributor.authorKulkarni, S. R.-
dc.contributor.authorMoskvitin, Alexander S.-
dc.contributor.authorMundell, Carole G.-
dc.contributor.authorNaylor, Tim-
dc.contributor.authorPage, Kim L.-
dc.contributor.authorPenprase, Bryan E.-
dc.contributor.authorPerri, Matteo-
dc.contributor.authorPodsiadlowski, Philipp-
dc.contributor.authorRoth, Katherine-
dc.contributor.authorRutledge, Robert E.-
dc.contributor.authorSakamoto, Takanori-
dc.contributor.authorSchady, Patricia-
dc.contributor.authorSchmidt, Brian-
dc.contributor.authorSoderberg, Alicia M.-
dc.contributor.authorSollerman, Jesper-
dc.contributor.authorStephens, Andrew William-
dc.contributor.authorStratta, Guilia-
dc.contributor.authorUkwatta, Tilán N.-
dc.contributor.authorWatson, David G.-
dc.contributor.authorWestra, Eduard-
dc.contributor.authorWold, T.-
dc.contributor.authorWolf, Christopher-
dc.identifier.citationNature 461(7268): 1254-1257 (2009)en_US
dc.description4 pages, 3 figures.-- ArXiv pre-print available at: http://arxiv.org/abs/0906.1577en_US
dc.descriptionSupporting information available at: http://www.nature.com/nature/journal/v461/n7268/suppinfo/nature08459.html-
dc.description.abstractLong-duration γ-ray bursts (GRBs) are thought to result from the explosions of certain massive stars, and some are bright enough that they should be observable out to redshifts of z > 20 using current technology. Hitherto, the highest redshift measured for any object was z = 6.96, for a Lyman-alpha emitting galaxy. Here we report that GRB 090423 lies at a redshift of z ≈ 8.2, implying that massive stars were being produced and dying as GRBs ~630 Myr after the Big Bang. The burst also pinpoints the location of its host galaxy.en_US
dc.description.sponsorshipThis work was partly based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the US National Science Foundation on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), the Ministério da Ciência e Tecnologia (Brazil) and SECYT (Argentina). The UKIRT is operated by the Joint Astronomy Centre on behalf of the UK Science and Technology Facilities Council. R.J.F. acknowledges a Clay Fellowship.en_US
dc.format.extent2284683 bytes-
dc.publisherNature Publishing Groupen_US
dc.titleA big γ-ray burst at a redshift of z ≈ 8.2en_US
dc.title.alternativeA glimpse of the end of the dark ages: the γ-ray burst of 23 April 2009 at redshift 8.3-
dc.description.peerreviewedPeer revieweden_US
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