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Panchromatic study of GRB 060124: from precursor to afterglow
P. Romano, S. Campana, G. Chincarini +35
We present observations of GRB 060124, the first event for which both the prompt and the afterglow emission could be observed simultaneously and in their entirety by the three Swif…
A metal rich molecular cloud surrounds GRB 050904 at redshift 6.3
S. Campana, D. Lazzati, E. Ripamonti +7
GRB050904 is the gamma-ray burst with the highest measured redshift. We performed time resolved X-ray spectroscopy of the late GRB and early afterglow emission. We find robust evid…
Swift observations of GRB050904: the most distant cosmic explosion ever observed
G. Cusumano, V. Mangano, G. Chincarini +30
Swift discovered the high redshift (z=6.29) GRB050904 with the Burst Alert Telescope (BAT) and began observing with its narrow field instruments 161 s after the burst onset. This g…
Persistent and Transient Blank Field Sources
A. Treves, S. Campana, M. Chieregato +3
Blank field sources (BFS) are good candidates for hosting dim isolated neutron stars (DINS). The results of a search of BFS in the ROSAT HRI images are revised. We then focus on tr…
UVES/VLT high resolution spectroscopy of GRB 050730 afterglow: probing the features of the GRB environment
V. D'Elia, F. Fiore, E. Meurs +44
We analyze high resolution spectroscopic observations of the optical afterglow of GRB050730, obtained with UVES@VLT about hours after the GRB trigger. The spectrum shows that the I…
Hypernova Signatures in the Late Rebrightening of GRB 050525A
M. Della Valle, D. Malesani, J. S. Bloom +22
We report observations of GRB 050525A, for which a Gemini North spectrum shows its redshift to be z = 0.606. This is the third closest long GRB discovered by Swift. We observed its…