VHE observations of binary systems performed with the MAGIC telescopes
Torres, Diego F.; Zanin, Roberta; Casares, Jorge; de Oña Wilhelmi, Emma; López-Oramas, Alicia; Ribó, Marc; Munar-Adrover, Pere; Bordas, Pol; Hadasch, Daniela; Blanch, Oscar; Fernández-Barral, Alba; Moretti, Elena; Paredes, Josep Maria; Brun, François
Spain, Japan, Germany, France
Abstract
The improvement on the Imaging Air Cherenkov Technique (IACT) led to the discovery of a new type of sources that can emit at very high energies: the gamma-ray binaries. Only six systems are part of this exclusive class. We summarize the latest results from the observations performed with the MAGIC telescopes on different systems as the gamma-ray binary LS I + 61∘303 and the microquasars SS 433, V404 Cygni and Cygnus X-1, which are considered potential VHE gamma-ray emitters. The binary system LS I + 61∘ 303 has been observed by MAGIC in a long-term monitoring campaign. We show the newest results of our search for super-orbital variability also in context of contemporaneous optical observations. Besides, we will present the results of the only super-critical accretor known in our galaxy: SS 433. We will introduce the VHE results achieved with MAGIC after 100h of observations on the microquasar Cygnus X-1 and report on the microquasar V404 Cyg, which has been observed with MAGIC after it went through a series of exceptional X-ray outbursts in June 2015.