Observation of extragalactic sources of very high energy gamma-rays with the MAGIC telescope

Abstract

MAGIC is currently the largest single dish ground-based imaging air Cherenkov telescope in operation. During its first cycle of observations more than 20 extragalactic objects have been observed, and very high energy gamma-ray signals have been detected in several of them. The results of this observations are presented, together with a discussion of the spectral characteristics and the flux variability of the detected sources.Comment: 6 pages, 3 figures, to appear in the proceedings of the International School of Cosmics Ray Astrophysics (ISCRA) 15th Course: Astrophysics at Ultra-High Energies, Erice, Sicily, Italy, 20-27 Jun 200