The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy
/ Authors
A. Castro-Tirado, A. Castro-Tirado, V. V. Sokolov, V. V. Sokolov, J. Gorosabel, J. M. C. Cer'on, J. Greiner, R. Wijers, B. Jensen, J. Hjorth
and 46 more authors
S. Toft, H. Pedersen, E. Palazzi, E. Pian, N. Masetti, R. Sagar, V. Mohan, A. Pandey, S. Pandey, S. Dodonov, T. Fatkhullin, V. Afanasiev, V. N. Komarova, V. N. Komarova, A. Moiseev, R. Hudec, V. Šimon, P. Vreeswijk, E. Rol, S. Klose, B. Stecklum, M. Zapatero-Osorio, N. Caon, C. Blake, J. Wall, D. Heinlein, A. Henden, S. Benetti, A. Magazzú, F. Ghinassi, L. Tommasi, M. N. Bremer, C. Kouveliotou, S. Guziy, A. Shlyapnikov, U. Hopp, G. Feulner, S. Dreizler, D. Hartmann, H. Boehnhardt, J. Paredes, J. Martí, E. Xanthopoulos, H. Kristen, J. Smoker, K. Hurley
/ Abstract
Broad-band optical observations of the extraordi- narily bright optical afterglow of the intense gamma-ray burst GRB 991208 started � 2.1 days after the event and continued until 4 Apr 2000. The flux decay constant of the optical after- glow in the R-band is 2.30 ± 0.07 up to � 5 days, which
Journal: Astronomy and Astrophysics