2013-2016 review: HE Neutrino and UHECR Astronomy?

TL;DR

Between 2013 and 2016, high energy neutrino and UHECR observations did not confirm expected correlations with gamma-ray sources, raising questions about current models and the nature of high energy astrophysical phenomena.

Contribution

The review highlights the lack of observed correlations between neutrinos, UHECRs, and gamma-ray sources, challenging existing high energy astrophysics models and suggesting the need for new interpretations.

Findings

No correlation between neutrinos and gamma-ray sources.

UHECR anisotropy signals are absent or weak.

Tau neutrino detection in ICECUBE remains elusive.

Abstract

The last few years, 2013-2016, the high energy neutrino events in ICECUBE and the last rich UHECR maps by AUGER and TA were hopefully opening a new High Energy astronomy age. Unfortunately the foreseen correlation between neutrino with best gamma X sources has not (yet) been found. The most celebrated GRB gamma sources do not correlate to any neutrino events. The expected Local Group anisotropy in UHECR within the nuleon GZK cut off, has just fade away. UHECR events from Virgo are almost absent. Above two hundred TeV energy tau neutrino might shine by double bang in detectable way in ICECUBE. Within a dozen of events no tau neutrino arised (yet) in ICECUBE. Finally GRBs Fireball models calling since decades for HE neutrinos correlated imprint at TeVs energy are not (yet) found. So many absences are making a huge question mark: is there a new reading key?