Possibilities for SETI at High Energy

TL;DR

This paper explores the potential of high-energy signals like X-rays, gamma rays, and neutrinos for SETI, discussing scientific rationales, challenges, and future observational strategies to detect extraterrestrial technosignatures.

Contribution

It provides a comprehensive review of high-energy SETI, highlighting its scientific importance, current challenges, and proposing future directions for observational efforts.

Findings

High-energy signals could serve as technosignatures for extraterrestrial intelligence.

High-energy SETI faces unique technical and observational challenges.

Future strategies could enhance detection prospects in this domain.

Abstract

High-energy SETI pushes astrobiology to its limits, testing the most fundamental needs of life and the most extreme limits of technology. It has lagged behind the rest of the field, but the increased respectability of SETI could spark interest in the coming years. This white paper reviews the case for SETI in X-rays, gamma rays, and neutrinos, including rationales, challenges, and possible technosignatures, and suggests future strategies for observational work.