12–23 Jul 2021
Online
Europe/Berlin timezone

The imprint of protons on the emission of extended blazar jets

16 Jul 2021, 18:00
1h 30m
TBA

TBA

Poster GAD | Gamma Ray Direct Discussion

Speaker

Michael Zacharias (LUTH, Observatoire de Paris-Meudon, France)

Description

Blazars – active galaxies with the jet pointing at Earth – emit across all electromagnetic wavelengths. The so-called one-zone model has described well both quiescent and flaring states, however it cannot explain the radio emission. In order to self-consistently describe the entire electromagnetic spectrum, extended jet models are necessary. Notably, kinetic descriptions of extended jets can provide the temporal and spatial evolution of the particle species and the full electromagnetic output. Here, we present the initial results of a recently developed hadronic extended-jet code. As protons take much longer than electrons to lose their energy, they can transport energy over much larger distances than electrons and are therefore essential for the energy transport in the jet. Furthermore, protons can inject additional leptons through pion and Bethe-Heitler pair production, which can explain a dominant leptonic radiation signal while still producing neutrinos. We will present a detailed parameter study and provide insights into the different blazar sub-classes.

Keywords

AGN; kinetic model; extended jet;

Subcategory Theoretical Results

Primary authors

Michael Zacharias (LUTH, Observatoire de Paris-Meudon, France) Anita Reimer (Institut für Theoretische Physik, Universität Innsbruck, Austria) Dr Andreas Zech (LUTH, OBSPM)

Presentation materials