Bonn 2020 – wissenschaftliches Programm
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T 100.2: Vortrag
Freitag, 3. April 2020, 11:15–11:30, H-HS XVI
FACT - Highlights from an Unbiased Monitoring Program — •Thomas Bretz1 and Daniela Dorner2 for the FACT collaboration — 1RWTH Aachen, III. Physikalisches Institut A — 2Universität Würzburg, Lehrstuhl für Astronomie
The First G-APD Cherenkov Telescope (FACT) has been monitoring bright sources at TeV energies for over eight years, collecting a total of more than 14000 hours of physics data. Using semi conductor photosensors, the duty cycle is maximized and gaps in the light curves minimized. Unbiased monitoring yields an unprecedented data sample and allows for systematic studies of source variability. In addition, a lot of multi-wavelength observations are triggered. One on Mrk 501 in 2014 allowed for a variability studies in gamma rays. In 2016, an unprecedented study of the intermittent extreme blazar 1ES 2344+51.4 was triggered. The long-term sample is studied for multi-wavelength correlations, e.g. a 5.5 year sample of Mrk 421, and periodic oscillations. Recent results from these studies will be presented.