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A γ-ray burst at a redshift of z~8.2
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2009 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 461, 1254-1257 p.Article in journal (Refereed) Published
Abstract [en]

Long-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-α emitting galaxy. Here we report that GRB090423 lies at a redshift of z~8.2, implying that massive stars were being produced and dying as GRBs ~630Myr after the Big Bang. The burst also pinpoints the location of its host galaxy.

Place, publisher, year, edition, pages
2009. Vol. 461, 1254-1257 p.
Research subject
Astronomy
Identifiers
URN: urn:nbn:se:su:diva-32274ISI: 000271190800042OAI: oai:DiVA.org:su-32274DiVA: diva2:279966
Available from: 2009-12-07 Created: 2009-12-07 Last updated: 2017-12-12Bibliographically approved

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