Observations of the Blazar 3C 66A with the MAGIC Telescopes in Stereoscopic Mode
Abstract
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 . The derived integral flux above is 8.3% of Crab Nebula flux and the energy spectrum is reproduced by a power law of photon index . 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 .
Keywords
Cite
@article{arxiv.1010.0550,
title = {Observations of the Blazar 3C 66A with the MAGIC Telescopes in Stereoscopic Mode},
author = {The MAGIC Collaboration and J. Aleksić and L. A. Antonelli and P. Antoranz and M. Backes and J. A. Barrio and D. Bastieri and J. Becerra González and W. Bednarek and A. Berdyugin and K. Berger and E. Bernardini and A. Biland and O. Blanch and R. K. Bock and A. Boller and G. Bonnoli and P. Bordas and D. Borla Tridon and V. Bosch-Ramon and D. Bose and I. Braun and T. Bretz and M. Camara and A. Cañellas and E. Carmona and A. Carosi and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and L. Cossio and S. Covino and F. Dazzi and A. De Angelis and E. De Cea del Pozo and B. De Lotto and M. De Maria and F. De Sabata and C. Delgado Mendez and A. Diago Ortega and M. Doert and A. Domínguez and D. Dominis Prester and D. Dorner and M. Doro and D. Elsaesser and M. Errando and D. Ferenc and M. V. Fonseca and L. Font and R. J. García López and M. Garczarczyk and D. Garrido and G. Giavitto and N. Godinović and D. Hadasch and A. Herrero and D. Hildebrand and D. Höhne-Mönch and J. Hose and D. Hrupec and B. Huber and T. Jogler and S. Klepser and T. Krähenbühl and D. Kranich and J. Krause and A. La Barbera and D. Lelas and E. Leonardo and E. Lindfors and S. Lombardi and F. Longo and M. López and E. Lorenz and P. Majumdar and M. Makariev and G. Maneva and N. Mankuzhiyil and K. Mannheim and L. Maraschi and M. Mariotti and M. Martínez and D. Mazin and M. Meucci and J. M. Miranda and R. Mirzoyan and H. Miyamoto and J. Moldón and A. Moralejo and D. Nieto and K. Nilsson and R. Orito and I. Oya and R. Paoletti and S. Pardo and J. M. Paredes and S. Partini and M. Pasanen and F. Pauss and R. G. Pegna and M. A. Perez-Torres and M. Persic and L. Peruzzo and J. Pochon and F. Prada and P. G. Prada Moroni and E. Prandini and N. Puchades and I. Puljak and I. Reichardt and R. Reinthal and W. Rhode and M. Ribó and J. Rico and S. Rügamer and A. Saggion and K. Saito and T. Y. Saito and M. Salvati and M. Sánchez-Conde and K. Satalecka and V. Scalzotto and V. Scapin and C. Schultz and T. Schweizer and M. Shayduk and S. N. Shore and A. Sierpowska-Bartosik and A. Sillanpää and J. Sitarek and D. Sobczynska and F. Spanier and S. Spiro and A. Stamerra and B. Steinke and J. Storz and N. Strah and J. C. Struebig and T. Surić and L. Takalo and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and M. Thom and D. F. Torres and H. Vankov and P. Vogler and R. M. Wagner and Q. Weitzel and V. Zabalza and F. Zandanel and R. Zanin},
journal= {arXiv preprint arXiv:1010.0550},
year = {2010}
}
Comments
Accepted for publication in ApJ