183 citations · 1.2k across the 16 of their papers we have counts for
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Re-born fireballs in Gamma-Ray Bursts
G. Ghisellini, A. Celotti, G. Ghirlanda +2
We consider the interaction between a relativistic fireball and material assumed to be still located just outside the progenitor star. Only a small fraction of the expected mass is…
Black-body components in Gamma-Ray Bursts spectra?
G. Ghirlanda, Z. Bosnjak, G. Ghisellini +2
We study 7 Gamma Ray Bursts (GRBs), detected both by the BATSE instrument, on-board the Compton Gamma Ray Observatory, and by the Wide Field Camera (WFC), on-board BeppoSAX. These…
Spectral analysis of Swift long GRBs with known redshift
J. I. Cabrera, C. Firmani, V. Avila-Reese +3
We study the spectral and energetics properties of 47 long-duration gamma-ray bursts (GRBs) with known redshift, all of them detected by the Swift satellite. Due to the narrow ener…
The role of afterglow break-times as GRB jet angle indicators
L. Nava, G. Ghisellini, G. Ghirlanda +3
The early X-ray light curve of Gamma Ray Bursts (GRBs) is complex, and shows a typical steep-flat-steep behaviour. The time T_a at which the flat (plateau) part ends may bear some…
"Late prompt" emission in Gamma Ray Bursts?
G. Ghisellini, G. Ghirlanda, L. Nava +1
The flat decay phase in the first 1e2-1e4 seconds of the X-ray light curve of Gamma Ray Bursts (GRBs) has not yet found a convincing explanation. The fact that the optical and X-ra…
Confirming the gamma-ray burst spectral-energy correlations in the era of multiple time breaks
G. Ghirlanda, L. Nava, G. Ghisellini +1
We test the spectral-energy correlation including the new bursts detected (mostly) by Swift with firm measurements of their redshifts and peak energy. The problem of identifying th…