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SNOLAB Journal Club. Paper: “Blazar Discoveries with VERITAS”, J.S. Perkins et al., arXiv:0907.4978v1, 28 Jul 2009. Discussion led by: Richard Ford, 6 th August 2009. The terminology. VERITAS. Each camera has 499 PMTs. Each mirror has 345 elements. VERITAS shower
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SNOLAB Journal Club Paper: “Blazar Discoveries with VERITAS”, J.S. Perkins et al., arXiv:0907.4978v1, 28 Jul 2009 Discussion led by: Richard Ford, 6th August 2009
VERITAS Each camera has 499 PMTs Each mirror has 345 elements
VERITAS shower • Detection and Measurement • Location (direction) • Size and brightness (energy) Gamma air-shower
Jetting Blazars are generally thought to be AGN with relativistic jets, where the jet direction is oriented towards earth. Blazars are observed/discovered at VERITAS based on excess events (100s) over the observation period (~20-40 hours).