3 papers
astro-ph2001
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…
astro-ph2000
Periodic modulation of the optical counterpart of the X-ray pulsator 1WGA J1958.2+3232. A new intermediate polar
M. Uslenghi, P. Bergamini, S. Catalano +2
Time-resolved observations of a 6' x 6' field, containing the position error boxes of the X-ray source 1WGA J1958.2+3232, were performed in June 1999 with the 91 cm Catania telesco…
astro-ph1999
I. Intensive Optical Monitoring of the BL Lac object PKS 2155-304: the July 1998 campaign. II. Optical Polarization of PKS 2155-304
A. Treves, E. Pian, F. Scaltriti +3
In this contribution two papers on the BL Lac object PKS 2155-304 are presented. They are based on our program of systematic intensive optical monitoring in search of fast variabil…