The Science of the Einstein Telescope

The Einstein Telescope (ET) is a proposed third-generation (under)ground-based gravitational wave detector. The ET consortium has recently released a comprehensive overview of the science case for the ET in arXiv:2503.12263 (now also published in Journal of Cosmology and Astroparticle Physics).

The science of ET is broad, covering astrophysics, cosmology, fundamental physics, nuclear physics, and multimessenger and multiwavelength astronomy. With many colleagues working on all the science aspects ET can observe, I contributed, among other things, to the section on ‘‘Tools for assessing the scientific potentials of detector configurations’’ as this section’s co-coordinator.