455 citations · 2.9k across the 55 of their papers we have counts for
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Gamma-Ray Bursts and Afterglow Polarisation
Stefano Covino, Elena Rossi, Davide Lazzati +2
Polarimetry of Gamma-Ray Burst (GRB) afterglows in the last few years has been considered one of the most effective tool to probe the geometry, energetic, dynamics and the environm…
Extragalactic Gamma--Rays: Gamma Ray Bursts and Blazars
Gabriele Ghisellini
The extragalactic gamma-ray sky is dominated by two classes of sources: Gamma-Ray Bursts (GRBs) and radio loud active galactic nuclei whose jets are pointing at us (blazars). We be…
A flash in the dark: UVES/VLT high resolution spectroscopy of GRB afterglows
F. Fiore, V. D'Elia, D. Lazzati +17
We present the first high resolution (R=20000--45000, corresponding to 14 km/s at 4200A to 6.6 km/s at 9000A) observations of the optical afterglow of Gamma Ray Bursts. GRB020813 a…
INTEGRAL observations of the field of the BL Lacertae object S5~0716+714
E. Pian, L. Foschini, V. Beckmann
We have performed observations of the blazar S5 0716+714 with INTEGRAL on 2-6 April 2004. In the first months of 2004, the source had increased steadily in optical brightness and h…
Gamma Ray Bursts: new rulers to measure the Universe
G. Ghirlanda, G. Ghisellini, D. Lazzati +1
The best measure of the Universe should be done using a standard "ruler" at any redshift. Type Ia Supernovae (SN Ia) probe the universe up to z1.5, while the Cosmic Microwave…
The collimation--corrected GRB energies correlate with the peak energy of their spectrum
G. Ghirlanda, G. Ghisellini, D. Lazzati
We consider all bursts with known redshift and peak energy, . For a good fraction of them an estimate of the jet opening angle is available from the achromat…