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arXiv · 1405.7400

GRB 140515A at z=6.33: Constraints on the End of Reionization From a Gamma-ray Burst in a Low Hydrogen Column Density Environment

R. Chornock·E. Berger·D. B. Fox·W. Fong·T. Laskar·K. C. Roth
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Abstract

We present the discovery and subsequent spectroscopy with Gemini-North of the optical afterglow of the Swift gamma-ray burst (GRB) 140515A. The spectrum exhibits a well-detected continuum at wavelengths longer than 8915 Angs with a steep decrement to zero flux blueward of 8910 Angs due to Ly-alpha absorption at redshift z~6.33. Some transmission through the Lyman-alpha forest is present at 5.2 ~6.

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R. Chornock, E. Berger, D. B. Fox, W. Fong, T. Laskar, K. C. Roth. 2014-05-28. GRB 140515A at z=6.33: Constraints on the End of Reionization From a Gamma-ray Burst in a Low Hydrogen Column Density Environment. https://arxiv.org/abs/1405.7400

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