SIMBAD references

2008MNRAS.388.1743T - Mon. Not. R. Astron. Soc., 388, 1743-1750 (2008/August-3)

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

TANVIR N.R., LEVAN A.J., ROL E., STARLING R.L.C., GOROSABEL J., PRIDDEY R.S., MALESANI D., JAKOBSSON P., O'BRIEN P.T., JAUNSEN A.O., HJORTH J., FYNBO J.P.U., MELANDRI A., GOMBOC A., MILVANG-JENSEN B., FRUCHTER A.S., JARVIS M., FERNANDES C.A.C. and WOLD T.

Abstract (from CDS):

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 which, if it is the host, implies a more moderate redshift (most likely z ≲ 2.8) and therefore that dust is the likely cause of the very red-afterglow colour. This being the case, it is one of the few instances so far found of a GRB afterglow with high-dust extinction.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: high-redshift - gamma-rays: bursts

Simbad objects: 34

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