A PHOTOMETRIC REDSHIFT OF z ∼ 9.4 FOR GRB 090429B

@article{Cucchiara2011APR,
  title={A PHOTOMETRIC REDSHIFT OF z ∼ 9.4 FOR GRB 090429B},
  author={Antonino Cucchiara and Andrew J. Levan and Derek B. Fox and Nial R. Tanvir and Tilan N. Ukwatta and Edo Berger and T. Kr{\"u}hler and Aybuke Kupcu Yoldas and X. F. Wu and Kenji Toma and Jochen Greiner and F. E. Olivares and Antonia Rowlinson and Lorenzo Amati and Takanori Sakamoto and Katherine C. Roth and A. W. Stephens and Alexander Fritz and Johan P. U. Fynbo and Jens Hjorth and Daniele B. Malesani and P. Jakobsson and K. Wiersema and P. T. O’Brien and Alicia Margarita Soderberg and Ryan J. Foley and Andrew S. Fruchter and James E. Rhoads and Robert E. Rutledge and Brian P. Schmidt and Michael A. Dopita and Philipp Podsiadlowski and Richard Willingale and Christian Wolf and Shrinivas R. Kulkarni and Paolo D’Avanzo},
  journal={The Astrophysical Journal},
  year={2011},
  volume={736}
}
Gamma-ray bursts (GRBs) serve as powerful probes of the early universe, with their luminous afterglows revealing the locations and physical properties of star-forming galaxies at the highest redshifts, and potentially locating first-generation (Population III) stars. Since GRB afterglows have intrinsically very simple spectra, they allow robust redshifts from low signal-to-noise spectroscopy, or photometry. Here we present a photometric redshift of z ∼ 9.4 for the Swift detected GRB 090429B… 

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