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The extreme, red afterglow of GRB 060923A: distance or dust?

Abstract:

Gamma-ray bursts (GRBs) are powerful probes of the early Universe, but locating and identifying very distant GRBs remain challenging. We report here the discovery of the K-band afterglow of Swift GRB 060923A, imaged within the first hour post-burst, and the faintest so far found. It was not detected in any bluer bands to deep limits, making it a candidate very high-z burst (z ≳ 11). However, our later-time optical imaging and spectroscopy reveal a faint galaxy coincident with the GRB position...

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Publication status:
Published

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Journal:
Monthly Notices of the Royal Astronomical Society
Volume:
388
Issue:
4
Pages:
1743-1750
Publication date:
2008-08-21
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Source identifiers:
335098
Language:
English
Keywords:
Pubs id:
pubs:335098
UUID:
uuid:93f46d72-d81a-42ea-bac6-07e0c9a5b73b
Local pid:
pubs:335098
Deposit date:
2012-12-19

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