Probing Cosmic Accelerators Using VHE Gamma Rays and UHE cosmic rays

TL;DR

This paper reviews how observations of VHE gamma rays and UHE cosmic rays can be used to investigate the physical conditions of cosmic accelerators like black holes and neutron stars, enhancing our understanding of their role in high-energy astrophysics.

Contribution

It provides a comprehensive review of recent progress and discusses how current and future observations can probe the environments of cosmic accelerators.

Findings

Galactic and extragalactic sources linked to black holes and neutron stars emit VHE gamma rays.

Recent observations help constrain acceleration mechanisms in cosmic sources.

Potential of VHE neutrino detection to complement gamma-ray observations.

Abstract

The $\gamma$-ray emission observed in several classes of Galactic and extragalactic astrophysical sources appears to be linked to accreting black holes and rotational powered neutron stars. These systems are prodigious cosmic accelerators, and are also potential sources of the UHE cosmic rays detected by several experiments and VHE neutrinos. We review a recent progress in our understanding of these objects, and demonstrate how recent and future observations can be employed to probe the conditions in the sources.