Covino, Stefano; Malesani, Daniele; Tagliaferri, Gianpiero; Vergani, Susanna D.; Chincarini, Guido; Kann, D.A.; Moretti, Alberto; Stella, L.
(2007-11-26)
The availability of multi-wavelength high-quality data of gamma-ray burst afterglows in the Swift era, contrary to the expectations, did not allow us to fully confirm yet one of the most fundamental features of the standard ...