Multimessenger astronomy with the Einstein Telescope

TL;DR

This paper reviews how the Einstein Telescope, a third-generation gravitational wave detector, will enhance multimessenger astrophysics by combining GW data with other signals like gamma rays, neutrinos, and electromagnetic observations.

Contribution

It provides a comprehensive overview of the science potential of the Einstein Telescope for multimessenger astronomy, emphasizing cosmic transients and building on previous detector results.

Findings

ET will significantly improve detection of cosmic transients.

Multimessenger observations will enable new astrophysical insights.

ET's capabilities surpass those of GEO, LIGO, and Virgo.

Abstract

Gravitational waves (GWs) are expected to play a crucial role in the development of multimessenger astrophysics. The combination of GW observations with other astrophysical triggers, such as from gamma-ray and X-ray satellites, optical/radio telescopes, and neutrino detectors allows us to decipher science that would otherwise be inaccessible. In this paper, we provide a broad review from the multimessenger perspective of the science reach offered by the third generation interferometric GW detectors and by the Einstein Telescope (ET) in particular. We focus on cosmic transients, and base our estimates on the results obtained by ET's predecessors GEO, LIGO, and Virgo.