Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March-April 2008

Aleksic, J; Anderhub, H; Antonelli, La; Antoranz, P; Backes, M; Baixeras, C; Balestra, S; Barrio, Ja; Bastieri, D; Gonzalez, Jb; Becker, Jk; Bednarek, W; Berdyugin, A; Berger, K; Bernardini, E; Biland, A; Bock, Rk; Bonnoli, G; Bordas, P; Tridon, Db; Bosch Ramon, V; Bose, D; Braun, I; Bretz, T; Britzger, D; Camara, M; Carmona, E; Carosi, A; Colin, P; Commichau, S; Contreras, Jl; Cortina, J; Costado, Mt; Covino, S; Dazzi, F; De Angelis, A; del Pozo ED,; De los Reyes, R; De Lotto, B; De Maria, M; De Sabata, F; Mendez, Cd; Dominguez, A; Prester, Dd; Dorner, D; Doro, M; Elsaesser, D; Errando, M; Ferenc, D; Fernandez, E; Firpo, R; Fonseca, Mv; Font, L; Galante, N; Rjg, Lopez; Garczarczyk, M; Gaug, M; Godinovic, N; Goebel, F; Hadasch, D; Herrero, A; Hildebrand, D; Hohne Monch, D; Hose, J; Hrupec, D; Hsu, Cc; Jogler, T; Klepser, S; Krahenbuhl, T; Kranich, D; La Barbera, A; Laille, A; Leonardo, E; Lindfors, E; Lombardi, S; Longo, F; Lopez, M; Lorenz, E; Majumdar, P; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Mariotti, M; Martinez, M; Mazin, D; Meucci, M; Miranda, Jm; Mirzoyan, R; Miyamoto, H; Moldon, J; Moles, M; Moralejo, A; Nieto, D; Nilsson, K; Ninkovic, J; Orito, R; Oya, I; Paoletti, R; Paredes, Jm; Pasanen, M; Pascoli, D; Pauss, F; Pegna, Rg; Perez Torres MA,; Persic, M; Peruzzo, L; Prada, F; Prandini, E; Puchades, N; Puljak, I; Reichardt, I; Rhode, W; Ribo, M; Rico, J; Rissi, M; Rugamer, S; Saggion, A; Saito, Ty; Salvati, M; Sanchez Conde, M; Satalecka, K; Scalzotto, V; Scapin, V; Schweizer, T; Shayduk, M; Shore, STEVEN NEIL; Sierpowska Bartosik, A; Sillanpaa, A; Sitarek, J; Sobczynska, D; Spanier, F; Spiro, S; Stamerra, A; Steinke, B; Strah, N; Struebig, Jc; Suric, T; Takalo, L; Tavecchio, F; Temnikov, P; Tescaro, D; Teshima, M; Torres, Df; Turini, N; Vankov, H; Wagner, Rm; Zabalza, V; Zandanel, F; Zanin, R; Zapatero, J; Pian, E; Bianchin, V; D'Ammando, F; Di Cocco, G; Fugazza, D; Ghisellini, G; Kurtanidze, Om; Raiteri, Cm; Tosti, G; Treves, A; Vercellone, S; Villata, M.

doi:10.1051/0004-6361/200913607

The blazar PG 1553+113 is a well known TeV gamma-ray emitter. In this paper we determine its spectral energy distribution through simultaneous multi-frequency data to study its emission processes. An extensive campaign was carried out between March and April 2008, where optical, X-ray, high-energy (HE) gamma-ray, and very-high-energy (VHE) gamma-ray data were obtained with the KVA, Abastumani, REM, RossiXTE/ASM, AGILE and MAGIC telescopes, respectively. We combine the data to derive the source's spectral energy distribution and interpret its double-peaked shape within the framework of a synchrotron self-Compton model.