2026-06-08T09:33:02Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/240062024-09-05T17:32:17Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Antoranz Canales, Pedro author Barrio Uña, Juan Abel author Bonnefoy, Simon Francois Albert author Carreto Fidalgo, David Friedrich author Contreras González, José Luis author Fonseca González, María Victoria author López Moya, Marcos author Miranda Pantoja, José Miguel author Satalecka, Konstanzja author Scapin, Valeria author 2015-04 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. 0004-6361 10.1051/0004-6361/201424879 https://hdl.handle.net/20.500.14352/24006 http://dx.doi.org/10.1051/0004-6361/201424879 http://www.aanda.org/ http://arxiv.org/abs/1502.01529v2 MAGIC observations of MWC 656, the only known Be/BH system