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A tale of two GRB-SNe at a common redshift of z = 0.54
Z. Cano, D. Bersier, C. Guidorzi +71
We present ground-based and HST optical observations of the optical transients (OTs) of long-duration Gamma Ray Bursts (GRBs) 060729 and 090618, both at a redshift of z = 0.54. For…
On the average Gamma-Ray Burst X-ray flaring activity
R. Margutti, G. Bernardini, R. Barniol Duran +3
Gamma-ray burst X-ray flares are believed to mark the late time activity of the central engine. We compute the temporal evolution of the average flare luminosity in the com…
Lag-luminosity relation in gamma-ray burst X-ray flares
R. Margutti
In strict analogy to prompt pulses, X-ray flares observed by Swift-XRT in long Gamma-Ray Bursts define a lag-luminosity relation: L_p,iso \propto t_lag^{-0.95+/-0.23}. The lag-lumi…
The afterglow and host galaxy of GRB 090205: evidence for a Ly-alpha emitter at z=4.65
P. D'Avanzo, M. Perri, D. Fugazza +17
Gamma-ray bursts have been proved to be detectable up to distances much larger than any other astrophysical object, providing the most effective way, complementary to ordinary surv…
Swift highlights and flares (Back to the drawing board?)
G. Chincarini, R. Margutti
Swift opened up a new era in the study of gamma-ray burst sources (GRB). Among a variety of discoveries made possible by Swift, here we focus on GRB090423, the event at z=8.2 which…
The Sooner: a Large Robotic Telescope
G. Chincarini, M. Zannoni, S. Covino +30
The approach of Observational Astronomy is mainly aimed at the construction of larger aperture telescopes, more sensitive detectors and broader wavelength coverage. Certainly fruit…