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10 papers · 2 filters
Unveiling the nature of three INTEGRAL sources through optical spectroscopy
N. Masetti, E. Palazzi, L. Bassani +2
The results of an optical spectroscopy campaign performed at the Astronomical Observatory of Bologna in Loiano (Italy) on three hard X-ray sources detected by INTEGRAL (IGR J17303-…
The line-of-sight towards GRB 030429 at z = 2.66: Probing the matter at stellar, galactic and intergalactic scales
P. Jakobsson, J. Hjorth, J. P. U. Fynbo +21
We report the discovery of the optical afterglow (OA) of the long-duration gamma-ray burst GRB 030429, and present a comprehensive optical/near-infrared dataset used to probe the m…
Prompt and afterglow X-ray emission from the X-Ray Flash of 2002 April 27
L. Amati, F. Frontera, J. J. M. in 't Zand +15
We report on the X-ray observations of the X-ray flash (XRF) which occurred on 2002 April 27, three days before BeppoSAX was switched off. The event was detected with the BeppoSAX…
A decreasing column density during the prompt emission from GRB000528 observed with BeppoSAX
F. Frontera, L. Amati, D. Lazzati +12
We report observation results of the prompt X-- and --ray emission from GRB 000528. This event was detected with the Gamma-Ray Burst Monitor and one of the two Wide Field Camera…
A look with BeppoSAX at the low-luminosity Galactic X-ray source 4U 2206+54
N. Masetti, D. Dal Fiume, L. Amati +4
A pointed observation of the low-luminosity galactic source 4U 2206+54 was carried out in November 1998 with BeppoSAX. The light curve of 4U 2206+54 shows erratic variability on a…
On the Afterglow of the X-Ray Flash of July 23 2003: Photometric evidence for an off-axis Gamma-Ray Burst with an associated Supernova?
J. P. U. Fynbo, J. Sollerman, J. Hjorth +31
We present optical and near-infrared follow-up observations of the X-Ray Flash (XRF) of July 23 2003. Our observations in the R-band cover the temporal range from 4.2 h to 64 days…