Jet-dominated advective systems: radio and X-ray luminosity dependence on the accretion rate
(2006)
A photometric redshift of z = 6.39 ± 0.12 for GRB 050904
Nature 440:7081 (2006) 181-183
Abstract:
Gamma-ray bursts (GRBs) and their afterglows are the most brilliant transient events in the Universe. Both the bursts themselves and their afterglows have been predicted to be visible out to redshifts of z ≈ 20, and therefore to be powerful probes of the early Universe1,2. The burst GRB 000131, at z = 4.50, was hitherto the most distant such event identified3. Here we report the discovery of the bright near-infrared afterglow of GRB 050904 (ref. 4). From our measurements of the near-infrared afterglow, and our failure to detect the optical afterglow, we determine the photometric redshift of the burst to be z = 6.39-0.12+0.11 (refs 5-7). Subsequently, it was measured8 spectroscopically to be z = 6.29 ± 0.01, in agreement with our photometric estimate. These results demonstrate that GRBs can be used to trace the star formation, metallicity, and reionization histories of the early Universe. © 2006 Nature Publishing Group.Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806–20
Monthly Notices of the Royal Astronomical Society: Letters Oxford University Press (OUP) 367:1 (2006) l6-l10
Candidate Isolated Neutron Stars and Other Optically Blank X-Ray Fields Identified from the ROSAT All-Sky and Sloan Digital Sky Surveys**Includes observations obtained with the Apache Point Observatory 3.5 m telescope, which is owned and operated by the Astrophysical Research Consortium.
The Astronomical Journal American Astronomical Society 131:3 (2006) 1740-1749