Anatomy of the AGN in NGC 5548 - IV. The short-term variability of the outflows L. Di Gesu, E. Costantini, J. Ebrero, M. Mehdipour, J. S. Kaastra, F. Ursini, P. O. Petrucci, M. Cappi, G. A. Kriss, S. Bianchi et al. (9 more) A&A, 579 (2015) A42 Published online: 24 June 2015 DOI: 10.1051/0004-6361/201525934