65 citations · 345 across the 12 of their papers we have counts for
13 papers · 1 filter
GRB 080319B: A Naked-Eye Stellar Blast from the Distant Universe
J. L. Racusin, S. V. Karpov, M. Sokolowski +81
Long duration gamma-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation…
The Rapidly Flaring Afterglow of the Very Bright and Energetic GRB 070125
Adria C. Updike, Joshua B. Haislip, Melissa C. Nysewander +52
We report on multi-wavelength observations, ranging from the X-ray to radio wave bands, of the IPN-localized gamma-ray burst GRB 070125. Spectroscopic observations reveal the prese…
GRBs with optical afterglow and known redshift: a statistical study
G. Greco, D. Bad'in, G. Beskin +5
We present a correlation between two intrinsic parameters of GRB optical afterglows. These are the isotropic luminosity at the maximum of the light curve (Lpeak) and the time-integ…
The 2005 outburst of the halo black hole X-ray transient XTE J1118+480
C. Zurita, M. A. P. Torres, D. Steeghs +15
We present optical and infrared monitoring of the 2005 outburst of the halo black hole X-ray transient XTE J1118+480. We measured a total outburst amplitude of ~5.7+-0.1 mag in the…
GRB 021004 modelled by multiple energy injections
A. de Ugarte Postigo, A. J. Castro-Tirado, J. Gorosabel +43
GRB 021004 is one of the best sampled gamma-ray bursts (GRB) to date, although the nature of its light curve is still being debated. Here we present a large amount (107) of new opt…
X-ray/optical observations of A0535+26/HDE 245770 in quiescence
M. Orlandini, C. Bartolini, S. Campana +10
We present the result of three BeppoSAX observations of the X-ray binary pulsar A0535+26 in its quiescent state. The source is quite well detected up to 200 keV (6 sigma detection…
X-ray and optical monitoring of the peculiar source 4U 1700+24/V934 Her
N. Masetti, D. Dal Fiume, G. Cusumano +10
(Abridged) We report on ASCA and BeppoSAX observations of the X-ray source 4U 1700+24 and on (quasi-)simultaneous spectroscopy of its optical counterpart, V934 Her, from the Loiano…
GRB010222: afterglow emission from a rapidly decelerating shock
N. Masetti
The GRB010222 optical and near-infrared (NIR) afterglow was monitored at the TNG and other Italian telescopes starting ~1 day after the high-energy prompt event. The optical BVR li…
The very red afterglow of GRB 000418 - further evidence for dust extinction in a GRB host galaxy
S. Klose, B. Stecklum, N. Masetti +36
We report near-infrared and optical follow-up observations of the afterglow of the Gamma-Ray Burst 000418 starting 2.5 days after the occurrence of the burst and extending over nea…
ASCA and BeppoSAX observations of the peculiar X-ray source 4U1700+24/HD154791
D. Dal Fiume, N. Masetti, C. Bartolini +9
The X-ray source 4U1700+24/HD154791 is one of the few galactic sources whose counterpart is an evolved M star. In X-rays the source shows extreme erratic variability and a complex…
An optical study of the GRB 970111 field beginning 19 hours after the Gamma-Ray Burst
J. Gorosabel, A. J. Castro-Tirado, C. Wolf +13
We present the results of the monitoring of the GRB 970111 field that started 19 hours after the event. This observation represents the fastest ground-based follow-up performed for…
Optical observations in the field of GRB 970111
N. Masetti, C. Bartolini, A. Guarnieri +1
B, V and R optical photometry performed on the field of the GRB 970111 soon after its detection by BeppoSAX is presented. No remarkable optical object is found inside the corrected…
Early detection of the Optical Transient following the Gamma-Ray Burst GRB 970228
A. Guarnieri, C. Bartolini, N. Masetti +9
The optical counterpart of the Gamma-Ray Burst GRB 970228, discovered by Groot et al. (IAU Circ. 6584), is also detected in the B and R frames obtained about 4 hours earlier at the…