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Diversity of multiwavelength emission bumps in the GRB 100219A afterglow
J. Mao, D. Malesani, P. D'Avanzo +4
Context. Multi-wavelength observations of gamma-ray burst (GRB) afterglows provide important information about the activity of their central engines and their environments. In part…
The X-ray absorbing column density of a complete sample of bright Swift Gamma-Ray Bursts
S. Campana, R. Salvaterra, A. Melandri +7
A complete sample of bright Swift Gamma-ray Bursts (GRBs) has been recently selected by Salvaterra et al. (2011). The sample has a high level of completeness in redshift (91%). We…
The Dark Bursts population in a complete sample of bright Swift Long Gamma-Ray Bursts
A. Melandri, B. Sbarufatti, P. D'Avanzo +11
We study the properties of the population of optically dark events present in a carefully selected complete sample of bright Swift long gamma-ray bursts. The high level of complete…
A complete sample of bright Swift Long Gamma Ray Bursts: testing the spectral-energy correlations
L. Nava, R. Salvaterra, G. Ghirlanda +11
We use a nearly complete sample of Gamma Ray Bursts (GRBs) detected by the Swift satellite to study the correlations between the spectral peak energy Ep of the prompt emission, the…
A minor body falling onto a neutron star as an explanation for the unusual gamma-ray burst GRB 101225A
S. Campana, G. Lodato, P. D'Avanzo +17
The tidal disruption of a solar mass star around a supermassive black hole has been extensively studied analytically and numerically. In these events the star develops into an elon…
GRB 081029: A Gamma-Ray Burst with a Multi-Component Afterglow
Stephen T. Holland, Massimiliano De Pasquale, Jirong Mao +12
We present an analysis of the unusual optical light curve of the gamma-ray burst GRB 081029, a long-soft burst with a redshift of z = 3.8479. We combine X-ray and optical observati…