High Energy Particles from the Universe

TL;DR

This paper reviews the rapidly advancing field of high energy particle astronomy, focusing on extragalactic gamma sources, cosmic rays, and neutrinos to understand extreme astrophysical phenomena and probe fundamental physics.

Contribution

It provides a comprehensive overview of recent discoveries and methodologies in high energy particle astronomy, highlighting new observational evidence and potential for new physics insights.

Findings

Detection of extragalactic TeV gamma-ray sources

Observation of cosmic rays exceeding 25 Joules

Use of high energy particles to probe beyond standard models

Abstract

The field of high energy particle astronomy is exciting and rapidly developing. In the last few years, we have detected extragalactic sources of intense TeV gamma radiation and individual cosmic ray particles with energies exceeding 25 Joules. Understanding the workings of astrophysics under extreme conditions is the primary goal of this field. Also important is the possibility of using high energy particles from space to probe beyond the standard models of particle physics and cosmology. This paper presents a review of high energy particle astronomy using photons, cosmic rays, and neutrinos.