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Strategies for prompt searches for GRB afterglows: the discovery of the GRB 001011 optical/near-infrared counterpart using colour-colour selection
J. Gorosabel, J. U. Fynbo, J. Hjorth +25
We report the discovery of the optical and near-infrared counterparts to GRB 001011. The GRB 001011 error box determined by Beppo-SAX was simultaneously imaged in the near-infrared…
The optical afterglow and host galaxy of GRB 000926
J. P. U. Fynbo, J. Gorosabel, P. Moller +7
In this paper we illustrate with the case of GRB 000926 how Gamma Ray Bursts (GRBs) can be used as cosmological lighthouses to identify and study star forming galaxies at high reds…
The bright optical afterglow of the long GRB 001007
J. M. Castro Cerón, A. J. Castro-Tirado, J. Gorosabel +35
We present optical follow up observations of the long GRB 001007 between 6.14 hours and ~468 days after the event. An unusually bright optical afterglow (OA) was seen to decline fo…
Constraints on the optical afterglow emission of the short/hard burst GRB 010119
J. Gorosabel, M. I. Andersen, J. Hjorth +7
We report optical observations of the short/hard burst GRB 010119 error box, one of the smallest error boxes reported to date for short/hard GRBs. Limits of R > 22.3 and I > 21.2 a…
Follow-up observations from observatories based in Spain
Javier Gorosabel, Alberto J. Castro-Tirado, Jochen Greiner +4
We present a review of the follow-up observations carried out from observatories located in Spain; Calar-Alto, Izanha and Roque de Los Muchachos. It summarizes the observations car…
GRB 000301C: a possible short/intermediate duration burst connected to a DLA system
J. Gorosabel, J. U. Fynbo, B. L. Jensen +5
We discuss two main aspects of the GRB 000301C afterglow (Fynbo et al. 2000, Jensen et al. 2000); its short duration and its possible connection with a Damped Ly-alpha Absorber (DL…
Optical observations of the dark Gamma-Ray Burst GRB 000210
Javier Gorosabel, Jens Hjorth, Holger Pedersen +11
We report on optical observations on GRB 000210 obtained with the 2.56-m Nordic Optical Telescope and the 1.54-m Danish Telescope starting 12.4 hours after the gamma-ray event. The…
The Host Galaxy and Optical Light Curve of the Gamma-Ray Burst GRB 980703
S. Holland, J. P. U. Fynbo, J. Hjorth +10
We present deep HST/STIS and ground-based photometry of the host galaxy of the gamma-ray burst GRB 980703 taken 17, 551, 710, and 716 days after the burst. We find that the host is…
INTEGRAL capabilities for faint Gamma-Ray Bursts
J. Gorosabel, N. Lund, S. Brandt +1
We discuss the INTEGRAL capabilities to detect a high redshift population of gamma-ray bursts (GRBs). First a simple comparison between other past or planned experiments (BATSE, SA…
The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy
A. J. Castro-Tirado, V. V. Sokolov, J. Gorosabel +50
Observations of the extraordinarily bright optical afterglow (OA) of GRB 991208 started 2.1 d after the event. The flux decay constant of the OA in the R-band is -2.30 +/- 0.07 up…
The optical afterglow and host galaxy of GRB000926
J. U. Fynbo, J. Gorosabel, T. H. Dall +27
We present the discovery of the Optical Transient (OT) of the long-duration gamma-ray burst GRB000926. The optical transient was detected independently with the Nordic Optical Tele…