MULTIWAVELENGTH EVIDENCE FOR QUASI-PERIODIC MODULATION IN THE GAMMA-RAY BLAZAR PG 1553+113

M. Ajello,A. Albert,W. Atwood,L. Baldini,J. Ballet,G. Barbiellini,D. Bastieri,J. González,R. Bellazzini,E. Bissaldi,R. Blandford,E. Bloom,R. Bonino,E. Bottacini,J. Bregeon,P. Bruel,R. Buehler,S. Buson,G. Caliandro,R. Cameron,R. Caputo,M. Caragiulo,P. Caraveo,E. Cavazzuti,C. Cecchi,A. Chekhtman,J. Chiang,G. Chiaro,S. Ciprini,J. Cohen-Tanugi,J. Conrad,S. Cutini,F. D’Ammando,A. Angelis,F. Palma,R. Desiante,L. Venere,A. Domínguez,P. Drell,C. Favuzzi,S. Fegan,E. Ferrara,W. Focke,L. Fuhrmann,Y. Fukazawa,P. Fusco,F. Gargano,D. Gasparrini,N. Giglietto,P. Giommi,F. Giordano,M. Giroletti,G. Godfrey,D. Green,I. Grenier,J. Grove,S. Guiriec,A. Harding,E. Hays,J. Hewitt,A. Hill,D. Horan,T. Jogler,G. Jóhannesson,A. Johnson,T. Kamae,M. Kuss,S. Larsson,L. Latronico,J. Li,Liang Li,F. Longo,F. Loparco,B. Lott,M. Lovellette,P. Lubrano,J. Magill,S. Maldera,Alberto Manfreda,W. Max-Moerbeck,M. Mayer,M. Mazziotta,J. Mcenery,P. Michelson,T. Mizuno,M. Monzani,A. Morselli,I. Moskalenko,S. Murgia,E. Nuss,M. Ohno,T. Ohsugi,R. Ojha,N. Omodei,E. Orlando,J. Ormes,D. Paneque,T. Pearson,J. Perkins,M. Perri,M. Pesce-Rollins,V. Petrosian,F. Piron,G. Pivato,T. Porter,S. Rainò,R. Rando,M. Razzano,S. Rayner,A. Reimer,O. Reimer,A. Schulz,C. Sgrò,E. Siskind,F. Spada,G. Spandre,P. Spinelli,D. Suson,H. Takahashi,J. Thayer,D. Thompson,L. Tibaldo,D. Torres,G. Tosti,E. Troja,Y. Uchiyama,G. Vianello,K. Wood,M. Wood,S. Zimmer,A. Berdyugin,R. Corbet,T. Hovatta,E. Lindfors,K. Nilsson,R. Reinthal,A. Sillanpaa,A. Stamerra,L. Takalo,M. Valtonen