3 papers
astro-ph.CO2009
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…
astro-ph.HE2009
Testing an unifying view of Gamma Ray Burst afterglows
M. Nardini, G. Ghisellini, G. Ghirlanda +1
Four years after the launch the Swift satellite the nature of the Gamma Ray Bursts (GRBs) broadband afterglow behaviour is still an open issue ad the standard external shock fireba…
astro-ph.HE2009
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…