# Astrophysical neutrinos: theory

## TL;DR

This paper reviews the theoretical aspects of astrophysical neutrinos, emphasizing their significance in multi-messenger astronomy due to their unique interaction properties.

## Contribution

It provides a concise overview of the key theoretical issues related to astrophysical neutrinos, highlighting their role in modern astronomy.

## Key findings

- Neutrinos are crucial messengers in multi-messenger astronomy.
- The paper discusses the fundamental interaction properties of astrophysical neutrinos.
- It summarizes the main theoretical challenges and questions in the field.

## Abstract

In the era of multi-messenger astronomy, neutrinos are among the most important astronomical messengers, due to their interaction properties. In these lessons I briefly review the main issues concerning the theory on astrophysical neutrinos.