Recent HEGRA observations of BL Lac (2200+420)
Abstract
The active galaxy BL Lac is the prototype of the so-called BL Lac objects. All AGN detected in the TeV energy range so far belong to this class of objects. BL Lac has been observed by the HEGRA system of imaging Cherenkov Telescopes for a total time of 10.5 hours from September to November 2000. We compare the results of these observations with X-ray data from the All Sky Monitor aboard the RXTE satellite and present an upper limit on the γ-flux for energies above 0.7 TeV.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- August 2001
- Bibcode:
- 2001ICRC....7.2658M