Ultra High Energy Cosmic Rays

TL;DR

This paper reviews recent measurements of ultra high energy cosmic rays from the Pierre Auger Observatory and the Telescope Array, comparing their results and highlighting agreements in this low-rate, high-energy astrophysics domain.

Contribution

It provides a comparative analysis of the latest data from two major cosmic ray observatories, emphasizing their agreements in measurements.

Findings

Both experiments observe consistent flux measurements.

Agreement on the energy spectrum at ultra high energies.

Complementary sky coverage enhances understanding of cosmic ray origins.

Abstract

Ultra high energy particles arrive at Earth constantly. They provide a beam at energies higher than any man-made accelerator, but at a very low rate. Two large experiments, the Pierre Auger Observatory and the Telescope Array experiment, have been taking data for several years now covering together the whole sky. I summarize the most recent measurements from both experiments, I compare their results and, for a change, I highlight their agreements.