Observations of TeV gamma rays from Markarian 501 at large zenith angles
P M Chadwick; K Lyons; T J L McComb; K J Orford; J L Osborne; S M Rayner; S E Shaw; K E Turver; P M Chadwick; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; K Lyons; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; T J L McComb; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; K J Orford; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; J L Osborne; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; S M Rayner; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; S E Shaw; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK; K E Turver; Department of Physics, Rochester Building, Science Laboratories, University of Durham, Durham DH1 3LE, UK
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
1999-08-01
Аннотация:
TeV gamma rays from the blazar Markarian 501 have been detected with the University of Durham Mark 6 atmospheric Cerenkov telescope using the imaging technique at large zenith angles. Observations were made at zenith angles in the range 70°-73° during July and August 1997 when Markarian 501 was undergoing a prolonged and strong flare.
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