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GRB 080913 at redshift 6.7
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(2009) GRB 080913 at redshift 6.7. Astrophysical Journal, Vol.693 (No.2). pp. 1610-1620. doi:10.1088/0004-637X/693/2/1610
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Official URL: http://dx.doi.org/10.1088/0004-637X/693/2/1610
Abstract
We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared follow-up observations by GROND, which led to the discovery of its optical/NIR afterglow and the recognition of its high-z nature via the detection of a spectral break between the i' and z' bands. Spectroscopy obtained at the ESO-VLT revealed a continuum extending down to lambda = 9400 angstrom, and zero flux for 7500 angstrom< lambda < 9400 angstrom, which we interpret as the onset of a Gunn-Peterson trough at z = 6.695 +/- 0.025 (95.5% confidence level), making GRB 080913 the highest-redshift gamma-ray burst (GRB) to date, and more distant than the highest-redshift QSO. We note that many redshift indicators that are based on promptly available burst or afterglow properties have failed for GRB 080913. We report on our follow-up campaign and compare the properties of GRB 080913 with bursts at lower redshift. In particular, since the afterglow of this burst is fainter than typical for GRBs, we show that 2 m class telescopes can identify most high-redshift GRBs.
Item Type: | Journal Item | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Astrophysical Journal | ||||
Publisher: | IOP Publishing | ||||
ISSN: | 0004-637X | ||||
Official Date: | 10 March 2009 | ||||
Dates: |
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Volume: | Vol.693 | ||||
Number: | No.2 | ||||
Number of Pages: | 11 | ||||
Page Range: | pp. 1610-1620 | ||||
DOI: | 10.1088/0004-637X/693/2/1610 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | XMM-Newton SOC, DFG, EU, Leibniz-Prize, European Southern Observatory, Chile | ||||
Grant number: | MEIF-CT-2006-041363, HA 1850/28-1, 081.A-0135, 081.A-0856, 081.A-0966 |
Data sourced from Thomson Reuters' Web of Knowledge
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