Monitoring of bright blazars with MAGIC telescope

Understand

Blazars, a class of Active Galactic Nuclei (AGN) characterized by a close orientation of their relativistic outflows (jets) towards the line of sight, are a well established extragalactic TeV $\gamma$-ray emitters.

• Since 2006, three nearby and TeV bright blazars, Markarian (Mrk) 421, Mrk 501 and 1ES 1959+650, are regularly observed by the MAGIC telescope with single exposures of 30 to 60 minutes.
• The sensitivity of MAGIC allows to establish a flux level of 30% of the Crab flux for each such observation.
• In a case of Mrk 421 strong flux variability in different time scales and a high correlation between X-ray/TeV emissions have been observed.