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A gamma-ray burst at a redshift of z approximate to 8.2

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Tanvir, N. R., Fox, D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., Cucchiara, A., Kruehler, T., Gehrels, N., Bloom, Joshua S. et al.

. (2009) A gamma-ray burst at a redshift of z approximate to 8.2. Nature, Vol.461 (No.7268). pp. 1254-1257. ISSN 0028-0836

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Official URL: http://dx.doi.org/10.1038/nature08459

Abstract

Long-duration gamma-ray bursts (GRBs) are thought to result from the explosions of certain massive stars(1), and some are bright enough that they should be observable out to redshifts of z > 20 using current technology(2-4). Hitherto, the highest redshift measured for any object was z = 6.96, for a Lyman-alpha emitting galaxy(5). Here we report that GRB 090423 lies at a redshift of z approximate to 8.2, implying that massive stars were being produced and dying as GRBs similar to 630 Myr after the Big Bang. The burst also pinpoints the location of its host galaxy.

Item Type:

Journal Article

Subjects:

Q Science

Divisions:

Faculty of Science > Physics

Journal or Publication Title:

Nature

Publisher:

Nature Publishing Group

ISSN:

0028-0836