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arxiv: 0911.1088 · v2 · submitted 2009-11-05 · 🌌 astro-ph.HE · astro-ph.CO

Recognition: unknown

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

MAGIC Collaboration: J. Aleksi\'c (1) , H. Anderhub (2) , L. A. Antonelli (3) , P. Antoranz (4) , M. Backes (5) , C. Baixeras (6) , S. Balestra (4) , J. A. Barrio (4)
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D. Bastieri (7) J. Becerra Gonz\'alez (8) J. K. Becker (5) W. Bednarek (9) A. Berdyugin (10) K. Berger (9) E. Bernardini (11) A. Biland (2) R. K. Bock (12 7) G. Bonnoli (13) P. Bordas (14) D. Borla Tridon (12) V. Bosch-Ramon (14) D. Bose (4) I. Braun (2) T. Bretz (15) D. Britzger (12) M. Camara (4) E. Carmona (12) A. Carosi (3) P. Colin (12) S. Commichau (2) J. L. Contreras (4) J. Cortina (1) M. T. Costado (8 16) S. Covino (3) F. Dazzi (17 26) A. De Angelis (17) E. De Cea del Pozo (18) R. De los Reyes (4 28) B. De Lotto (17) M. De Maria (17) F. De Sabata (17) C. Delgado Mendez (8 27) A. Dom\'inguez (19) D. Dominis Prester (20) D. Dorner (2) M. Doro (7) D. Elsaesser (15) M. Errando (1) D. Ferenc (21) E. Fern\'andez (1) R. Firpo (1) M. V. Fonseca (4) L. Font (6) N. Galante (12) R. J. Garc\'ia L\'opez (8 M. Garczarczyk (1) M. Gaug (8) N. Godinovic (20) F. Goebel (12 29) D. Hadasch (18) A. Herrero (8 D. Hildebrand (2) D. H\"ohne-M\"onch (15) J. Hose (12) D. Hrupec (20) C. C. Hsu (12) T. Jogler (12) S. Klepser (1) T. Kr\"ahenb\"uhl (2) D. Kranich (2) A. La Barbera (3) A. Laille (21) E. Leonardo (13) E. Lindfors (10) S. Lombardi (7) F. Longo (17) M. L\'opez (7) E. Lorenz (2 12) P. Majumdar (11) G. Maneva (22) N. Mankuzhiyil (17) K. Mannheim (15) L. Maraschi (3) M. Mariotti (7) M. Mart\'inez (1) D. Mazin (1) M. Meucci (13) J. M. Miranda (4) R. Mirzoyan (12) H. Miyamoto (12) J. Mold\'on (14) M. Moles (19) A. Moralejo (1) D. Nieto (4) K. Nilsson (10) J. Ninkovic (12) R. Orito (12) I. Oya (4) R. Paoletti (13) J. M. Paredes (14) M. Pasanen (10) D. Pascoli (7) F. Pauss (2) R. G. Pegna (13) M. A. Perez-Torres (19) M. Persic (17 23) L. Peruzzo (7) F. Prada (19) E. Prandini (7) N. Puchades (1) I. Puljak (20) I. Reichardt (1) W. Rhode (5) M. Rib\'o (14) J. Rico (24 1) M. Rissi (2) S. R\"ugamer (15) A. Saggion (7) T. Y. Saito (12) M. Salvati (3) M. S\'anchez-Conde (19) K. Satalecka (11) V. Scalzotto (7) V. Scapin (17) T. Schweizer (12) M. Shayduk (12) S. N. Shore (25) A. Sierpowska-Bartosik (9) A. Sillanp\"a\"a (10) J. Sitarek (12 9) D. Sobczynska (9) F. Spanier (15) S. Spiro (3) A. Stamerra (13) B. Steinke (12) N. Strah (5) J. C. Struebig (15) T. Suric (20) L. Takalo (10) F. Tavecchio (3) P. Temnikov (22) D. Tescaro (1) M. Teshima (12) D. F. Torres (24 18) N. Turini (13) H. Vankov (22) R. M. Wagner (12) V. Zabalza (14) F. Zandanel (19) R. Zanin (1) J. Zapatero (6) E. Pian (33 39) V. Bianchin (30) F. D'Ammando (31) G. Di Cocco (30) D. Fugazza (32) G. Ghisellini (32) O. M. Kurtanidze (38) C. M. Raiteri (34) G. Tosti (35) A. Treves (36) S. Vercellone (37) M. Villata (34) ((1) IFAE Edifici Cn. Campus UAB E-08193 Bellaterra Spain (2) ETH Zurich CH-8093 Switzerland (3) INAF National Institute for Astrophysics I-00136 Rome Italy (4) Universidad Complutense E-28040 Madrid (5) Technische Universit\"at Dortmund D-44221 Dortmund Germany (6) Universitat Aut\`onoma de Barcelona (7) Universit\`a di Padova INFN I-35131 Padova (8) Inst. de Astrof\'isica de Canarias E-38200 La Laguna Tenerife (9) University of \L\'od\'z PL-90236 Lodz Poland (10) Tuorla Observatory University of Turku FI-21500 Piikki\"o Finland (11) Deutsches Elektronen-Synchrotron (DESY) D-15738 Zeuthen (12) Max-Planck-Institut f\"ur Physik D-80805 M\"unchen (13) Universit\`a di Siena INFN Pisa I-53100 Siena (14) Universitat de Barcelona (ICC/IEEC) E-08028 Barcelona (15) Universit\"at W\"urzburg D-97074 W\"urzburg (16) Depto. de Astrofisica Universidad E-38206 La Laguna (17) Universit\`a di Udine INFN Trieste I-33100 Udine (18) Institut de Ci\`encies de l'Espai (IEEC-CSIC) (19) Inst. de Astrof\'isica de Andaluc\'ia (CSIC) E-18080 Granada (20) Croatian MAGIC Consortium Institute R. Boskovic University of Rijeka University of Split HR-10000 Zagreb Croatia (21) University of California Davis CA-95616-8677 USA (22) Inst. for Nucl. Research Nucl. Energy BG-1784 Sofia Bulgaria (23) INAF/Osservatorio Astronomico I-34143 Trieste (24) ICREA E-08010 Barcelona (25) Universit\`a di Pisa I-56126 Pisa (26) supported by INFN Padova (27) now at: Centro de Investigaciones Energ\'eticas Medioambientales y Tecnol\'ogicas (CIEMAT) Madrid (28) now at: Max-Planck-Institut f\"ur Kernphysik D-69029 Heidelberg (29) deceased (30) INAF/IASF-Bologna I-40129 Bologna (31) INAF/IASF-Roma I-00133 Roma (32) INAF Astronomical Obs. Brera I-23807 Merate (33) INAF Trieste Astronomical Observatory (34) INAF Astronomical Obs. Torino I-10025 Torino (35) University of Perugia I-06123 Perugia (36) University of Insubria I-22100 Como (37) INAF IASF-Milano I-20133 Milano (38) Abastumani Astrophysical Observatory 383762 Abastumani Georgia (39) now at: Scuola Normale Superiore Italy)
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classification 🌌 astro-ph.HE astro-ph.CO
keywords gamma-raydatasimultaneousagileblazardistributionenergymulti-frequency
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The blazar PG 1553+113 is a well known TeV gamma-ray emitter. In this paper, we determine its spectral energy distribution using simultaneous multi-frequency data in order 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. This is the first simultaneous broad-band (i.e., HE+VHE) gamma-ray observation, though AGILE did not detect the source. We combine data to derive source's spectral energy distribution and interpret its double peaked shape within the framework of a synchrotron self compton model

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