Achromatic Breaks for Swift GRBs: Any Evidence?
  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 afterglow picture: the presence of an achromatic break in the decaying light curve. We briefly review the most interesting cases identified so far. 
S. Covino (INAF/OABr), D. Malesani (NBI-Dark, SISSA), G. Tagliaferri   (INAF/OABr), S.D. Vergani (DIAS and DCU), G. Chincari...