Consistency with synchrotron emission in the bright GRB 160625B observed by Fermi M. E. Ravasio, G. Oganesyan, G. Ghirlanda, L. Nava, G. Ghisellini, A. Pescalli and A. Celotti A&A, 613 (2018) A16 Published online: 25 May 2018 DOI: 10.1051/0004-6361/201732245