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
Abstract
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 deg during 1997 July and August when Markarian 501 was undergoing a prolonged and strong flare.
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