# Tau Neutrinos in IceCube, KM3NeT and the Pierre Auger Observatory

## TL;DR

This paper reviews tau neutrino detection prospects across IceCube, KM3NeT, Pierre Auger Observatory, and discusses recent evidence for astrophysical neutrino sources, emphasizing future experimental capabilities.

## Contribution

It provides a comprehensive overview of tau neutrino physics potential in current and upcoming neutrino observatories, highlighting recent findings and future prospects.

## Key findings

- Evidence for astrophysical neutrino sources from IceCube
- Detection mechanisms for high-energy tau neutrinos discussed
- Flux upper limits set by Pierre Auger Observatory

## Abstract

In 2018, the IceCube collaboration reported evidence for the identification of a blazar as an astrophysical neutrino source. That evidence is briefly summarised here before focusing on the prospects of tau neutrino physics in IceCube, both at high energies (astrophysical neutrinos) and at lower energies (atmospheric neutrino oscillations). In addition, future neutrino detectors such as KM3NeT and the IceCube Upgrade and their tau neutrino physics potential are discussed. Finally, the detection mechanism for high-energy (tau) neutrinos in the Pierre Auger Observatory and the resulting flux upper limits are presented.