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OBSERVATIONS OF THE BLAZAR 3C 66A WITH THE MAGIC TELESCOPES IN STEREOSCOPIC MODE

Jelena Aleksić,L. A. Antonelli,P. Antoranz,M. Backes,J. A. Barrio,D. Bastieri,J. Becerra González,W. Bednarek,A. Berdyugin,K. Berger,Lorenzo Bellizzi,A. Biland,O. Blanch-Bigas,R. Böck,A. Boller,Giacomo Bonnoli,P. Bordas,D. Borla Tridon,V. Bosch-Ramón,D. Bose,I. Braun,T. Bretz,Miguel Cámara,A. Cañellas,E. Carmona,A. Carosi,Pedro Colín,E. Colombo,Juan L. Contreras,J. Cortina,L. Cossio,S. Covino,F. Dazzi,A. De Angelis,E. De Cea del Pozo,B. De Lotto,Mónica María,F. De Sabata,C. Delgado Mendez,A. Diago Ortega,M. Doert,A. Domínguez,D. Dominis Prester,D. Dorner,Mattia Doro,D. Elsaesser,M. Errando,D. Ferenc,M. V. Fonseca,L. Font,R. Garcia Lopez,M. Garczarczyk,G. Giavitto,N. Godinović,D. Hadasch,A. Herrero,D. Hildebrand,D. Höhne-Mönch,J. Hose,D. Hrupec,T. Jogler,S. Klepser,T. Krähenbühl,D. Kranich,J. Krause,A. La Barbera,E. Leonardo,E. Lindfors,S. Lombardi,F. Longo,M. López,E. Lorenz,P. Majumdar,M. Makariev,G. Maneva,N. Mankuzhiyil,K. Mannheim,L. Maraschi,M. Mariotti,M. Martínez,D. Mazin,M. Meucci,J. M. Miranda,R. Mirzoyan,H. Miyamoto,J. Moldón,A. Moralejo,D. Nieto,K. Nilsson,R. Orito,I. Oya,R. Paoletti,J. M. Paredes,S. Partini,M. Pasanen,Felicitas Pauss,R. Pegna,M. Á. Pérez-Torres,M. Persic,L. Peruzzo,J. Pochon,F. Prada,P. G. Prada Moroni,E. Prandini,N. Puchades,I. Puljak,I. Reichardt,R. Reinthal,W. Rhode,M. Ribó,J. Rico,S. Rügamer,A. Saggion,Kazuo Saito,T. Saito,M. Salvati,Miguel A. Sánchez-Conde,K. Satalecka,V. Scalzotto,V. Scapin,C. Schultz,T. Schweizer,M. Shayduk,Steven N. Shore,A. Sierpowska-Bartosik,A. Sillanpää,J. Sitarek,D. Sobczynska,F. Spanier,S. Spiro,A. Stamerra,B. Steinke,J. Storz,N. Strah,J. C. Struebig,Tihomir Surić,L. Takalo,F. Tavecchio,P. Temnikov,T. Terzić,D. Tescaro,M. Teshima,M. Thom,D. F. Torres,H. Vankov,Richard Wagner,Q. Weitzel,V. Zabalza,F. Zandanel,R. Zanin

Blazar

Physics

BL Lac object

2010

We report new observations of the intermediate-frequency peaked BL Lacertae object 3C 66A with the MAGIC telescopes. The data sample we use were taken in 2009 December and 2010 January, and comprises 2.3 hr of good quality data in stereoscopic mode. In this period, we find a significant signal from the direction of the blazar 3C 66A. The new MAGIC stereoscopic system is shown to play an essential role for the separation between 3C 66A and the nearby radio galaxy 3C 66B, which is at a distance of only $6^\prime$. The derived integral flux above $100\eh{GeV}$ is 8.3% of Crab Nebula flux and the energy spectrum is reproduced by a power law of photon index $3.64 \pm 0.39_{\rm stat} \pm 0.25_{\rm sys}$. Within errors, this is compatible with the one derived by VERITAS in 2009. From the spectra corrected for absorption by the extragalactic background light, we only find small differences between the four models that we applied, and constrain the redshift of the blazar to $z < 0.68$.

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“OBSERVATIONS OF THE BLAZAR 3C 66A WITH THE MAGIC TELESCOPES IN STEREOSCOPIC MODE” is a paper by Jelena Aleksić L. A. Antonelli P. Antoranz M. Backes J. A. Barrio D. Bastieri J. Becerra González W. Bednarek A. Berdyugin K. Berger Lorenzo Bellizzi A. Biland O. Blanch-Bigas R. Böck A. Boller Giacomo Bonnoli P. Bordas D. Borla Tridon V. Bosch-Ramón D. Bose I. Braun T. Bretz Miguel Cámara A. Cañellas E. Carmona A. Carosi Pedro Colín E. Colombo Juan L. Contreras J. Cortina L. Cossio S. Covino F. Dazzi A. De Angelis E. De Cea del Pozo B. De Lotto Mónica María F. De Sabata C. Delgado Mendez A. Diago Ortega M. Doert A. Domínguez D. Dominis Prester D. Dorner Mattia Doro D. Elsaesser M. Errando D. Ferenc M. V. Fonseca L. Font R. Garcia Lopez M. Garczarczyk G. Giavitto N. Godinović D. Hadasch A. Herrero D. Hildebrand D. Höhne-Mönch J. Hose D. Hrupec T. Jogler S. Klepser T. Krähenbühl D. Kranich J. Krause A. La Barbera E. Leonardo E. Lindfors S. Lombardi F. Longo M. López E. Lorenz P. Majumdar M. Makariev G. Maneva N. Mankuzhiyil K. Mannheim L. Maraschi M. Mariotti M. Martínez D. Mazin M. Meucci J. M. Miranda R. Mirzoyan H. Miyamoto J. Moldón A. Moralejo D. Nieto K. Nilsson R. Orito I. Oya R. Paoletti J. M. Paredes S. Partini M. Pasanen Felicitas Pauss R. Pegna M. Á. Pérez-Torres M. Persic L. Peruzzo J. Pochon F. Prada P. G. Prada Moroni E. Prandini N. Puchades I. Puljak I. Reichardt R. Reinthal W. Rhode M. Ribó J. Rico S. Rügamer A. Saggion Kazuo Saito T. Saito M. Salvati Miguel A. Sánchez-Conde K. Satalecka V. Scalzotto V. Scapin C. Schultz T. Schweizer M. Shayduk Steven N. Shore A. Sierpowska-Bartosik A. Sillanpää J. Sitarek D. Sobczynska F. Spanier S. Spiro A. Stamerra B. Steinke J. Storz N. Strah J. C. Struebig Tihomir Surić L. Takalo F. Tavecchio P. Temnikov T. Terzić D. Tescaro M. Teshima M. Thom D. F. Torres H. Vankov Richard Wagner Q. Weitzel V. Zabalza F. Zandanel R. Zanin published in 2010. It has an Open Access status of “bronze”. You can read and download a PDF Full Text of this paper here.