A unique UV flare in the optical light curve of the quasar J004457.9+412344 H. Meusinger, M. Henze, K. Birkle, W. Pietsch, B. Williams, D. Hatzidimitriou, R. Nesci, S. Ertel, A. Hinze, T. Bertold and B. Kaminsky EPJ Web of Conferences, 39 (2012) 08001 Published online: 18 December 2012 DOI: 10.1051/epjconf/20123908001