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Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 83: Gamma astronomy II

T 83.1: Gruppenbericht

Donnerstag, 18. März 2021, 16:00–16:20, Th

FACT - Highlights from Unbiased Monitoring at Very High Energies — •Daniela Dorner1 and Thomas Bretz2,3 for the FACT collaboration — 1Universität Würzburg, Germany — 2ETH Zürich, Schweiz — 3RWTH Aachen, Germany

The First G-APD Cherenkov Telescope (FACT) has been monitoring bright sources at TeV energies for more than eight years, collecting a total of more than 14700 hours of physics data. The duty cycle is maximized and gaps in the light curves are minimized using semiconductor photosensors. In combination with an unbiased observing strategy, this yields an unprecedented data sample and allows for systematic studies of source variability. In addition, many multi-wavelength observations are triggered or carried out in the context of multi-instrument campaigns. Those are crucial to interpret the origin of the TeV gamma-ray emission. The presentation will summarize results from the past years on the blazars Mrk 501, Mrk 421, 1ES 1959+650 and 1ES 2344+514.

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