5 papers · 1 filter
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…
Temporal behaviour of emissions from Gamma-ray bursts and optical/near-IR afterglows of GRB 991208 and GRB 991216
R. Sagar, V. Mohan, A. K. Pandey +2
The CCD magnitudes in Cousins R and I photometric passbands are determined for GRB 991216 and GRB 991208 afterglows respectively about 1 and about 3 day after trigger of the corres…
Spectral Energy Distributions and Light Curves of GRB 990123 and its Afterglow
T. J. Galama, M. S. Briggs, R. A. M. J. Wijers +38
Gamma-ray bursts (GRBs) are thought to result from the interaction of an extremely relativistic outflow interacting with a small amount of material surrounding the site of the expl…
Optical follow up of the GRB 990123 source from UPSO, Nainital
R. Sagar, A. K. Pandey, V. Mohan +4
The CCD magnitudes in Johnson and Cousins photometric passbands are determined for the optical transient of GRB 990123. These observations have been taken approximately 12…
BVRI CCD photometric standards in the field of GRB 990123
Nilakshi, R. K. S. Yadav, V. Mohan +2
The CCD magnitudes in Johnson and Cousins photometric passbands are determined for 18 stars in the field of GRB 990123. These measurements can be used in carrying out pre…