Observations of microquasars with the MAGIC telescope

Abstract

We report on the results from the observations in very high energy band (VHE, E_gamma > 100GeV) of the black hole X-ray binary (BHXB) Cygnus X-1. The observations were performed with the MAGIC telescope, for a total of 40 hours during 26 nights, spanning the period between June and November 2006. We report on the results of the searches for steady and variable gamma-ray signals, including the first experimental evidence for an intense flare, of duration between 1.5 and 24 hours.

Contribution to the 30th ICRC, Merida Mexico, July 2007 on behalf of the MAGIC Collaboration

References in corpus (14)

• Variable Very High Energy Gamma-ray Emission from the Microquasar LS I +61 303
• A relativistic jet from Cygnus X-1 in the low/hard X-ray state
• Discovery of the Binary Pulsar PSR B1259-63 in Very-High-Energy Gamma Rays around Periastron with H.E.S.S
• Discovery of very high energy gamma-rays associated with an X-ray binary
• A dark jet dominates the power output of the stellar black hole Cygnus X-1
• The Soft Gamma-Ray Spectral Variability of Cygnus X-1
• Very High Energy Gamma-ray Radiation from the Stellar-mass Black Hole Cygnus X-1
• Cosmic Rays from Microquasars: a Narrow Component to the CR Spectrum?
• Accretion vs colliding wind models for the gamma-ray binary LS I +61 303: an assessment
• Evolutionary constraints on the masses of the components of HDE 226868/Cyg X-1 binary system
• Hints for a fast precessing relativistic radio jet in LS I +61 303
• The broad-band spectrum of Cygnus X-1 measured by INTEGRAL
• Two-temperature accretion flows in magnetic cataclysmic variables: Structures of post-shock emission regions and X-ray spectroscopy
• Very high energy gamma-ray production inside the massive binary system Cyg X-1/HDE 226868