Göttingen 2012 – scientific programme

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T: Fachverband Teilchenphysik

T 91: Gammaastronomie 3

T 91.1: Talk

Wednesday, February 29, 2012, 16:45–17:00, ZHG 008

VERITAS Observations of Markarian 421 & 501 — •Roman Welsing — DESY, Platanenallee 6, 15738 Zeuthen

Markarian 421 and 501 are among the brightest high frequency peaked BL-Lac Objects (HBL) in the TeV sky of the northern hemisphere. As such, they allow us to study the physical processes responsible for their gamma-ray emission in great detail. Therefore those objects, as part of a coordinated multi-wavelength (MWL) campaign, have been observed with the VERITAS Telescopes in southern Arizona for more than 10 hrs each during the 2010/2011 season. The physics results, including spectra, lightcurves and variability studies, of the 2010/2011 observations are presented.