A next-generation ground-based wide field-of-view gamma-ray observatory in the southern hemisphere

TL;DR

This paper discusses the development of a next-generation, wide field-of-view gamma-ray observatory in the southern hemisphere, aiming to enhance sky surveys and multi-messenger astrophysics.

Contribution

It introduces the SWGO collaboration and outlines the science case and design considerations for a new gamma-ray observatory in the southern hemisphere.

Findings

Enriched understanding of TeV gamma-ray sources from northern surveys.

Proposal of a new southern hemisphere gamma-ray observatory.

Integration with multi-messenger astrophysics efforts.

Abstract

The very-high-energy gamma-ray sky can be surveyed on a daily basis by particle-detector arrays at high (mountain) elevation. In the northern hemisphere the survey recently conducted by the HAWC gamma-ray observatory significantly enriched our knowledge about TeV gamma-ray sources. In this contribution, we will present an overview on the effort to realise a next-generation gamma-ray survey observatory in the southern hemisphere. We will discuss the unique science case for this observatory and how it will be embedded in the multi-messenger and multi-wavelength census of the non-thermal universe. In addition, we will introduce the newly founded international organisation that aims to realise this facility: The Southern Wide field-of-View Gamma-ray Observatory (SWGO) collaboration.