455 citations · 2.9k across the 55 of their papers we have counts for
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Prolonged activity of the central engine of Gamma Ray Bursts
G. Ghisellini, M. Nardini, G. Ghirlanda
We call "prompt" emission of Gamma Ray Bursts (GRBs) the erratic and violent phase of hard X-ray and soft gamma-ray emission, usually lasting for tens of seconds in long GRBs. Howe…
The puzzling clustering and bimodality of long GRBs optical afterglow luminosities
M. Nardini, G. Ghisellini, G. Ghirlanda
The study of the rest frame properties of long Gamma-Ray bursts (GRBs) afterglows is a fundamental aspect for a better understanding of the nature of these powerful explosions. The…
The Next Generation of Cherenkov Telescopes. A White Paper for the Italian National Institute for Astrophysics (INAF)
L. A. Antonelli, P. Blasi, G. Bonanno +15
Motivated by the recent challenging results from TeV astronomy, the VHE INAF community asked a group of them to write this White Paper to summarize the status and future of Cherenk…
Blazars in hard X-rays
Gabriele Ghisellini
Although blazars are thought to emit most of their luminosity in the gamma-ray band, there are subclasses of them very prominent in hard X-rays. These are the best candidates to be…
The changing look of PKS 2149-306
V. Bianchin, L. Foschini, G. Ghisellini +8
Aims: We study the blazar nature of the high-redshift Flat-Spectrum Radio Quasar PKS 2149-306 (z = 2.345) by investigating its long-term behavior. Methods: We analyzed all publicly…
Selection effects on GRB spectral-energy correlations
Lara Nava, Giancarlo Ghirlanda, Gabriele Ghisellini
Instrumental selection effects can act upon the estimates of the peak energy Ep, the fluence F and the peak flux P of GRBs. If this were the case, then the correlations involving t…