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T: Fachverband Teilchenphysik
T 82: Gamma-Astronomie 1
T 82.4: Talk
Monday, March 9, 2009, 17:50–18:05, M218
Discovery of a very high energy gamma-ray signal from the 3C 66A/B region — •Daniel Mazin1, Manel Errando1, and Elina Lindfors2 — 1IFAE, Barcelona, Spain — 2Tuorla Observatory, Univ. of Turku, Finland
The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2hr in 2007 August-December. The observations resulted in the discovery of a gamma-ray source at energies above 150GeV centered at celestial coordinates RA=2h23m12s and DEC=43deg0.7m (MAGICJ0223+430), coinciding with the nearby radio galaxy 3C 66B. Though the association of the signal with the distant blazar 3C 66A cannot be completely excluded, 3C 66B is more likely source of the emission. In this talk we will present the detection and discuss the origin of the very high energy gamma-ray signal.