A photometric redshift of z = 6.39 ± 0.12 for GRB 050904

J. B. Haislip, M. C. Nysewander, D. E. Reichart (), A. Levan, N. Tanvir, S. B. Cenko, D. B. Fox, P. A. Price, A. J. Castro-Tirado, J. Gorosabel, C. R. Evans, E. Figueredo, C. L. MacLeod, J. R. Kirschbrown, M. Jelinek, S. Guziy, A. de Ugarte Postigo, E. S. Cypriano, A. LaCluyze, J. Graham, R. Priddey, R. Chapman, J. Rhoads, A. S. Fruchter, D. Q. Lamb, C. Kouveliotou, R. A. M. J. Wijers, M. B. Bayliss, B. P. Schmidt, A. M. Soderberg, S. R. Kulkarni, F. A. Harrison, D. S. Moon, A. Gal-Yam, M. M. Kasliwal, R. Hudec, S. Vitek, P. Kubanek, J. A. Crain, A. C. Foster, J. C. Clemens, J. W. Bartelme, R. Canterna, D. H. Hartmann, A. A. Henden, S. Klose, H.-S. Park, G. G. Williams, E. Rol, P. O'Brien, D. Bersier, F. Prada, S. Pizarro, D. Maturana, P. Ugarte, A. Alvarez, A. J. M. Fernandez, M. J. Jarvis, M. Moles, E. Alfaro, K. M. Ivarsen, N. D. Kumar, C. E. Mack, C. M. Zdarowicz, N. Gehrels, S. Barthelmy and D. N. Burrows
Additional contact information
J. B. Haislip: University of North Carolina at Chapel Hill
M. C. Nysewander: University of North Carolina at Chapel Hill
D. E. Reichart: University of North Carolina at Chapel Hill
A. Levan: University of Hertfordshire
N. Tanvir: University of Hertfordshire
S. B. Cenko: California Institute of Technology
D. B. Fox: Pennsylvania State University
P. A. Price: University of Hawaii
A. J. Castro-Tirado: Instituto de Astrofisica de Andalucia
J. Gorosabel: Instituto de Astrofisica de Andalucia
C. R. Evans: University of North Carolina at Chapel Hill
E. Figueredo: Universidade de Sao Paulo
C. L. MacLeod: University of North Carolina at Chapel Hill
J. R. Kirschbrown: University of North Carolina at Chapel Hill
M. Jelinek: Instituto de Astrofisica de Andalucia
S. Guziy: Instituto de Astrofisica de Andalucia
A. de Ugarte Postigo: Instituto de Astrofisica de Andalucia
E. S. Cypriano: Southern Observatory for Astrophysical Research
A. LaCluyze: University of North Carolina at Chapel Hill
J. Graham: University of California
R. Priddey: University of Hertfordshire
R. Chapman: University of Hertfordshire
J. Rhoads: Space Telescope Science Institute
A. S. Fruchter: Space Telescope Science Institute
D. Q. Lamb: University of Chicago
C. Kouveliotou: National Space Science Technology Center
R. A. M. J. Wijers: University of Amsterdam and Center for High-Energy Astrophysics
M. B. Bayliss: University of North Carolina at Chapel Hill
B. P. Schmidt: Mount Stromlo and Siding Spring Observatories
A. M. Soderberg: California Institute of Technology
S. R. Kulkarni: California Institute of Technology
F. A. Harrison: California Institute of Technology
D. S. Moon: California Institute of Technology
A. Gal-Yam: California Institute of Technology
M. M. Kasliwal: California Institute of Technology
R. Hudec: Academy of Sciences of the Czech Republic
S. Vitek: Czech Technical University
P. Kubanek: Integral Science Data Center
J. A. Crain: University of North Carolina at Chapel Hill
A. C. Foster: University of North Carolina at Chapel Hill
J. C. Clemens: University of North Carolina at Chapel Hill
J. W. Bartelme: University of North Carolina at Chapel Hill
R. Canterna: University of Wyoming
D. H. Hartmann: Clemson University
A. A. Henden: American Association of Variable Star Observers
S. Klose: Thueringer Landessternwarte Tautenburg
H.-S. Park: Lawrence Livermore National Laboratory
G. G. Williams: University of Arizona
E. Rol: University of Leicester
P. O'Brien: University of Leicester
D. Bersier: Liverpool John Moores University
F. Prada: Instituto de Astrofisica de Andalucia
S. Pizarro: Southern Observatory for Astrophysical Research
D. Maturana: Southern Observatory for Astrophysical Research
P. Ugarte: Southern Observatory for Astrophysical Research
A. Alvarez: Southern Observatory for Astrophysical Research
A. J. M. Fernandez: Instituto de Astrofisica de Andalucia
M. J. Jarvis: University of Oxford
M. Moles: Instituto de Astrofisica de Andalucia
E. Alfaro: Instituto de Astrofisica de Andalucia
K. M. Ivarsen: University of North Carolina at Chapel Hill
N. D. Kumar: University of North Carolina at Chapel Hill
C. E. Mack: University of North Carolina at Chapel Hill
C. M. Zdarowicz: University of North Carolina at Chapel Hill
N. Gehrels: NASA/Goddard Space Flight Center
S. Barthelmy: NASA/Goddard Space Flight Center
D. N. Burrows: Pennsylvania State University

Nature, 2006, vol. 440, issue 7081, 181-183

Abstract: Long ago and far away The γ-ray burst GRB 050904, detected by the Swift satellite on 4 September last year, is one of the most distant objects ever observed. Its redshift of z = 6.3 equates to an explosion taking place 12.8 billion years ago, when the Universe was a mere 890 million years old. Three groups this week present detailed observations of the γ-ray, X-ray, near-infrared and optical spectra of the afterglow of GRB 050904. The results begin to paint a picture of the conditions prevailing when the parent body exploded and suggest that the γ-ray bursts that we see in the future can be used by cosmologists to probe the early Universe for evidence of star and galaxy formation, nucleosynthesis and reionization.

Date: 2006
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DOI: 10.1038/nature04552

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