# Neutrino Astronomy with IceCube and Beyond

## TL;DR

IceCube is a large neutrino telescope at the South Pole that has detected high-energy astrophysical neutrinos, but their sources remain unidentified, prompting plans for a next-generation detector.

## Contribution

This paper provides an overview of IceCube's detection methods, recent astrophysical neutrino discoveries, source searches, and future detector plans.

## Key findings

- Detection of a diffuse high-energy neutrino flux from tens of TeV to PeV energies.
- No electromagnetic counterparts identified for the neutrino sources.
- Plans for the next-generation detector IceCube-Gen2 are discussed.

## Abstract

The IceCube Neutrino Observatory is a cubic kilometer neutrino telescope located at the geographic South Pole. Cherenkov radiation emitted by charged secondary particles from neutrino interactions is observed by IceCube using an array of 5160 photomultiplier tubes embedded between a depth of 1.5 km to 2.5 km in the Antarctic glacial ice. The detection of astrophysical neutrinos is a primary goal of IceCube and has now been realized with the discovery of a diffuse, high-energy flux consisting of neutrino events from tens of TeV up to several PeV. Many analyses have been performed to identify the source of these neutrinos, including correlations with active galactic nuclei, gamma-ray bursts, and the Galactic plane. IceCube also conducts multi-messenger campaigns to alert other observatories of possible neutrino transients in real time. However, the source of these neutrinos remains elusive as no corresponding electromagnetic counterparts have been identified. This proceeding will give an overview of the detection principles of IceCube, the properties of the observed astrophysical neutrinos, the search for corresponding sources (including real-time searches), and plans for a next-generation neutrino detector, IceCube-Gen2.