UHECR and GRB neutrinos: an incomplete revolution?

TL;DR

This paper reviews the current state of UHECR and UHE neutrino astronomy, highlighting the challenges, rejected models, and emerging evidence for sources like Cen A, with recent experimental data providing partial insights.

Contribution

It provides an overview of the evolving models and experimental findings in UHECR and neutrino sources, emphasizing the shift from initial theories to new observational hints.

Findings

Rejection of the initial GRB fireball model as the main UHE neutrino source.

Disproof of GZK-based UHECR source within the Super-Galactic Plane.

Emerging correlations between UHECR/ neutrino events and nearby extragalactic sources like Cen A.

Abstract

At highest energy edges Ultra High Energy Cosmic Ray, (UHECR) and PeVs neutrino (UHE neutrino), should soon offer new exciting astronomy. The fast and somehow contradictory growth of hundred of antagonist models shows the explosive vitality of those new astronomy frontiers. No conclusive understanding on the UHECR and UHE neutrino source are at hand. The earliest expectation of GRBs (as a one shoot Fireball model) as the main (UHE neutrino) sources has been rejected. The source of UHECR as the expected GZK ones within our Super-Galactic Plane (within few tens Mpc) it has been quite disproved. However alternative models on GRB (as the long life precessing Jets) and the new updated records by AUGER, TA, ICECUBE are offering nevertheless partial understanding and early hint for point source correlations along our galaxy and toward Cen A, the nearest extragalactic AGN.