Abstract
Relativistic jets are one of the most powerful manifestations of the release of energy produced around supermassive black holes at the centre of active galactic nuclei (AGN). Their emission is observed across the entire electromagnetic spectrum, from the radio band to gamma rays. Despite decades of efforts, many aspects of the physics of relativistic jets remain elusive. In particular, the location and the mechanisms responsible for the high-energy emission and the connection of the variability at different wavelengths are among the greatest challenges in the study of AGN.
Highlights
The extragalactic gamma-ray sky is largely dominated by radio-loud active galactic nuclei (AGN)
Relativistic jets are one of the most powerful manifestations of the release of energy produced around supermassive black holes at the centre of active galactic nuclei (AGN)
The high energy emission is likely due to inverse Compton scattering off the low energy photons by the relativistic electrons which are responsible for the synchrotron emission observed in the radio band
Summary
The extragalactic gamma-ray sky is largely dominated by radio-loud active galactic nuclei (AGN). In this contribution we present results on the multiwavelength variability study for PKS 1510-089, 3C 454.3, and SBS 0846+513 These objects underwent several gamma-ray flaring episodes detected by LAT and were subject of dedicated multiwavelength campaigns. In particular these sources are part of the Monitoring Of Jets in Active galactic nuclei with the VLBA Experiment (VLBA) programme, which provides multi-epoch polarimetric observations at 15 GHz with a sub-milliarcsecond.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
