TELAMON: Monitoring of AGN with the Effelsberg 100-m Telescope in the Context of Astroparticle Physics

Discussion timeslot (ZOOM-Meeting): 12. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/91896950007
ZOOM-Meeting ID: 91896950007
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/25-Blazars-AGN-MM/61
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-06/7

Abstract:
'We introduce the TELAMON program, which is using the Effelsberg 100-m telescope to monitor the radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, namely TeV blazars and neutrino-associated AGN. Thanks to its large dish aperture and sensitive instrumentation, the Effelsberg telescope can yield superior radio data over other programs in the low flux-density regime down to several 10mJy. This is a particular strength in the case of TeV-emitting blazars, which are often comparatively faint radio sources of the high-synchrotron peaked type. We perform high-cadence high-frequency observations every 2-4 weeks at multiple frequencies up to 44GHz. This setup is well suited to trace dynamical processes in the compact parsec-scale jets of blazars related to high-energy flares or neutrino detections. Our sample currently covers about 40 sources and puts its focus on the high-peaked BL Lac objects and extreme blazars most frequently observed by TeV telescopes. Here, we introduce the TELAMON program characteristics and present first results obtained since fall 2020.'

Authors: Matthias Kadler
Co-Authors: Uwe Bach | Daniela Dorner | Phil Edwards | Florian Eppel | Marcello Giroletti | Andrea Gokus | Jonas Heßdörfer | Shoko Koyama | Alex Kraus | Thomas Krichbaum | Elina Lindfors | Karl Mannheim | Roopesh Ojha | Georgios Filippos Paraschos | Florian Rösch | Eduardo Ros | Bernd Schleicher | Jonas Sinapius | Julian Sitarek | Joern Wilms
Collaboration: TELAMON

Indico-ID: 1320
Proceeding URL: https://pos.sissa.it/395/974