The energy spectrum of high energy gamma rays from Mrk501 by the stereoscopic analysis

The Utah Seven Telescope Array collaboration

Published 1999-06-03Version 1

We have developed the energy measurement method which based on stereoscopic observation with multiple telescopes for TeV gamma rays. Energy resolution obtained by this method was 23 %. The energy spectrum of the gamma-ray flares of Markarian 501 in 1997 was also obtained using this techniques. We have confirmed the bending or the cutoff of the energy spectrum around several TeV.