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Detection of the BL Lac object 1ES 1426+428 in the Very High Energy gamma-ray band by the CAT Telescope from 1998–2000
The BL Lac Object 1ES 1426+428, at a red-shift of , has been monitored by the Cat telescope from February 1998 to June 2000. The accumulation of 26 h of observations shows a γ-ray signal of 321 events above at 5.2 standard deviations, determined using data analysis cuts adapted to …