Multi-wavelength observations of H.E.S.S. AGN

TL;DR

This paper discusses multi-wavelength observational strategies combining H.E.S.S. VHE gamma-ray data with other bands to investigate active galactic nuclei, aiming to understand emission mechanisms and black hole roles.

Contribution

It highlights the importance of simultaneous multi-frequency observations with H.E.S.S. and other instruments to study AGN emission mechanisms and black hole influence.

Findings

Joint observations have led to new insights into emission locations.

Multi-wavelength data help constrain acceleration mechanisms.

Results contribute to understanding black hole roles in AGN.

Abstract

Multi-frequency observations are a powerful tool of astrophysical investigation. Not only is data in each wavelength band providing different clues to the objects nature, but taken simultaneously, these data can reveal the mechanisms at work in astrophysical objects. In the past years, joint multi-frequency observations with the H.E.S.S. telescopes in the very high energy (VHE, E>100GeV) band and several other experiments in the radio, optical, X-ray, and high energy (HE, E>100MeV) bands have lead to intriguing results that will ultimately help answering the open questions of the location of the very high energy emission, details of the acceleration mechanism, and the role of the central black hole.