MAGIC observations of MWC 656, the only known Be/BH system
Abstract
Context: MWC 656 has recently been established as the first observationally detected high-mass X-ray binary system containing a Be star and a black hole (BH). The system has been associated with a gamma-ray flaring event detected by the AGILE satellite in July 2010. Aims: Our aim is to evaluate if the MWC 656 gamma-ray emission extends to very high energy (VHE > 100 GeV) gamma rays. Methods. We have observed MWC 656 with the MAGIC telescopes for 23 hours during two observation periods: between May and June 2012 and June 2013. During the last period, observations were performed contemporaneously with X-ray (XMM-Newton) and optical (STELLA) instruments. Results: We have not detected the MWC 656 binary system at TeV energies with the MAGIC Telescopes in either of the two campaigns carried out. Upper limits (ULs) to the integral flux above 300 GeV have been set, as well as differential ULs at a level of 5% of the Crab Nebula flux. The results obtained from the MAGIC observations do not support persistent emission of very high energy gamma rays from this system at a level of 2.4% the Crab flux.
Keywords
Cite
@article{arxiv.1502.01529,
title = {MAGIC observations of MWC 656, the only known Be/BH system},
author = {J. Aleksić and S. Ansoldi and L. A. Antonelli and P. Antoranz and A. Babic and P. Bangale and J. A. Barrio and J. Becerra González and W. Bednarek and E. Bernardini and B. Biasuzzi and A. Bil and O. Blanch and S. Bonnefoy and G. Bonnoli and F. Borracci and T. Bretz and E. Carmona and A. Carosi and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and P. Da Vela and F. Dazzi and A. De Angelis and G. De Caneva and B. De Lotto and E. de Oña Wilhelmi and C. Delgado Mendez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Eisenacher and D. Elsaesser and D. Fidalgo and M. V. Fonseca and L. Font and K. Frantzen and C. Fruck and D. Galindo and R. J. García López and M. Garczarczyk and D. Garrido Terrats and M. Gaug and N. Godinović and A. González Muñoz and S. R. Gozzini and D. Hadasch and Y. Hanabata and M. Hayashida and J. Herrera and D. Hildebr and J. Hose and D. Hrupec and W. Idec and V. Kadenius and H. Kellermann and M. L. Knoetig and K. Kodani and Y. Konno and J. Krause and H. Kubo and J. Kushida and A. La Barbera and D. Lelas and N. Lewandowska and E. Lindfors and S. Lombardi and F. Longo and M. López and R. López-Coto and A. López-Oramas and E. Lorenz and I. Lozano and M. Makariev and K. Mallot and G. Maneva and N. Mankuzhiyil and K. Mannheim and L. Maraschi and B. Marcote and M. Mariotti and M. Martínez and D. Mazin and U. Menzel and J. M. Mir and a and R. Mirzoyan and A. Moralejo and P. Munar-Adrover and D. Nakajima and V. Neustroev and A. Niedzwiecki and K. Nilsson and K. Nishijima and K. Noda and R. Orito and A. Overkemping and S. Paiano and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and X. Paredes-Fortuny and M. Persic and J. Poutanen and P. G. Prada Moroni and E. Pr and ini and I. Puljak and R. Reinthal and W. Rhode and M. Ribó and J. Rico and J. Rodriguez Garcia and S. Rügamer and T. Saito and K. Saito and K. Satalecka and V. Scalzotto and V. Scapin and C. Schultz and T. Schweizer and A. Sillanpää and J. Sitarek and I. Snidaric and D. Sobczynska and F. Spanier and A. Stamerra and T. Steinbring and J. Storz and M. Strzys and L. Takalo and H. Takami and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and J. Thaele and O. Tibolla and D. F. Torres and T. Toyama and A. Treves and P. Vogler and M. Will and R. Zanin and J. Casares and J. Moldón},
journal= {arXiv preprint arXiv:1502.01529},
year = {2015}
}
Comments
Accepted for publication in A&A. 5 pages, 2 figures, 2 tables