AGN at very high energies: Cosmic accelerators and probes of space-time

Journal of Astrophysics and Astronomy

HÉLÈNE SOL^1¹ 

[1] LUTH, CNRS, Observatoire de Paris, PSL Research University, Place J. Janssen, 92195 Meudon, France.^1

关键词: Very high energy astrophysics;    active galactic nuclei;    cosmic accelerators;    cosmology.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

During the last decade, very high energy astrophysics emerged as a new branch of astronomy with major discoveries achieved by the present ground-based gamma-ray Cherenkov telescopes. The sample of cosmic sources firmly detected at very high energy (VHE) now exceeds two hundred objects, includingactive galactic nuclei (AGN), pulsar wind nebulae, and several other types of sources of which a significant number are unidentified ones. The scientific return from recent VHE data is particularly interesting for AGN science, shedding new light on particle acceleration and emission processes around supermassiveblack holes, and probing the intergalactic space by the analysis of VHE photons propagating from bright remote sources to the Earth. The perspectives of this research field are promising with new generation VHE instruments such as CTA, a project of open observatory at extreme energies at the horizon 2023,allowing a deep analysis of the sky in the highest part of the electromagnetic spectrum, from 20 GeV to 300 TeV.

【 授权许可】

CC BY