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Update on the Multi-Frequency Monitoring of Blazars with Medicina and Noto

Published online by Cambridge University Press:  07 April 2020

Simona Righini
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Pietro Cassaro
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Uwe Bach
Affiliation:
MPIfR - Max Planck Institute für Radioastronomie, Germany
Marcello Giroletti
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Carla Buemi
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Paolo Leto
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Monica Orienti
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Andrea Orlati
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Claudia M. Raiteri
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Corrado Trigilio
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Grazia Umana
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
Massimo Villata
Affiliation:
INAF - Istituto Nazionale di Astrofisica, Italy email: simona.righini@inaf.it
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Abstract

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The Medicina and Noto radiotelescopes have been employed for over 14 years to monitor the flux density variations of a vast sample of blazars at different radio frequencies. Radio data are essential components of blazar spectral energy distribution (SED, spanning from radio waves to gamma rays), whose trend with luminosity and shape changes provide decisive information on the physics of extra-galactic jets and, eventually, on the mechanism extracting energy from the central black hole in radio-loud AGN. Observations presently carried out at 5, 8 and 24 GHz have taken advantage of the continually evolving control system installed at the antennas. A new, batch-wise analysis tool was also produced, in order to easily handle and reduce the datasets acquired in monthly sessions. We here describe the latest developments and achievements.

Type
Contributed Papers
Copyright
© International Astronomical Union 2020