2008/09/23 by E. Angelakis, L. Fuhrmann, Angelakis, E. +7
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #Particle Detector Development and Performance #Radio Astronomy Observations and Technology
paper · pdf · doi:10.48550/arxiv.0809.3912
openalex publication_date 2008/09/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The analysis of the spectral energy distribution variability at frequencies from radio to TeV is a powerful tool in the investigation of the dynamics, the physics and the structure evolution occurring in the most exotic flavour of active galaxies, the blazars. In particular, the presence of \sl Fermi-GST is providing a unique opportunity for such studies delivering γ-ray data of unprecedented quality. Here we introduce a monitoring program that has been running at the Effelsberg 100m telescope since January 2007, underpinning a broad multi-frequency collaboration of facilities that cover the band from radio to infrared. Sixty one selected blazars are observed monthly between 2.64 GHz and 43 GHz. The calibration accuracy is better than a few percent as it is demonstrated with some preliminary examples.