Physical and statistical properties of High Frequency Peaked blazars

In the class of active galactic nuclei (AGNs), blazars are the most extreme objects, with their relativistic jets closely aligned to our line-of-sight. The emission of blazars is mostly non-thermal, spanning the entire electromagnetic spectrum, and is often linearly polarized providing us with important insights on the magnetic field structure. An emerging radio-loud AGN population is represented by high synchrotron peaked (HSP) blazars, characterized by their spectral energy distribution (SED) syncrotron emission component peaking at frequencies >10^15 Hz. The primary importance of HSPs is that their emission can reach the TeV energy domain, representing the ideal laboratory to investigate the particle acceleration mechanisms in some of the most extreme environments. On the other hand, at radio frequencies HSP blazars are relatively low-luminosity sources, in agreement with the anti-correlation between the synchrotron luminosity and the SED peak frequency, and they still represent an elusive blazar population. In this talk I will introduce some recent results regarding both the physical and statistical properties of this peculiar AGN sub-class.

Breve CV: Dr. Lico obtained his PhD in 2015 at the University of Bologna, and he’s now a postdoc at the Max-Planck-Institute für Radioastronomie in Bonn (Germany). He’s a leading expert in the study of blazar jets through observations across the whole electromagnetic spectrum.



07/06/2018 - 12:30
Dr. Lico
Universidad de Bologna,Italy