A TeV source in the 3C 66A/B region
نویسندگان
چکیده
The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 hr in 2007 August–December. The observations resulted in the discovery of a γ-ray source centered at celestial coordinates R.A. = 22312 and decl.= 430.7 (MAGIC J0223+430), coinciding with the nearby radio galaxy 3C 66B. A possible association of the excess with the blazar 3C 66A is discussed. The energy spectrum of MAGIC J0223+430 follows a power law with a normalization of (1.7± 0.3stat±0.6syst)×10 TeV cm s at 300 GeV and a photon index Γ = −3.10± 0.31stat±0.2syst.
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