Lightest to Heavy UHECR nuclei in a Local Universe

TL;DR

This paper updates the model of ultra-high-energy cosmic ray (UHECR) nuclei, focusing on lightest nuclei, to explain observed source clustering and hot spots, suggesting a mixed composition including light and heavy nuclei.

Contribution

It introduces an updated UHECR nuclei model emphasizing lightest nuclei, accounting for source correlations and recent observational data.

Findings

Light nuclei can explain nearest AGN and Star Burst source correlations.

Heavy nuclei may contribute at the highest energies with more deflection.

Model aligns with recent AUGER and TA observational records.

Abstract

UHECR are evaluated in the frame role of different nuclei composition. Most of the past and present models are considering proton or iron as their main courier. Some attention has been paid to the role of the UHECR light nuclei in recent years. We update here the lightest nuclei UHECR model, able to explain the nearest AGN or Star Burst sources with the few observed Hot Spot clustering in AUGER and TA array data. Any additional components of the heaviest nuclei with the highest energy, more bent and smeared, may also fit recent AUGER and TA homogeneous records at those energy edges.