Speaker
Description
The Einstein Telescope (ET) is a proposed third-generation ground-based gravitational-wave observatory designed to extend the sensitivity of current detectors by an order of magnitude and to access frequencies down to a few hertz. This improvement will dramatically increase the observable volume of the Universe and enable precision studies of compact-object populations, cosmology, and fundamental physics.
In this talk, I will review the scientific potential of ET, including its capability to observe binary black holes and neutron stars across cosmic history, perform high-precision tests of general relativity, and probe the properties of dense matter and the early Universe. I will discuss how ET compares to the current generation of detectors and highlight key expected gains in detection rates, parameter estimation, and multi-messenger astronomy.
I will also present an overview of the current status of the ET project and outline the main technological challenges that must be addressed to achieve its target sensitivity. These include low-frequency noise mitigation (seismic and Newtonian noise), thermal noise reduction through cryogenic operation and improved materials, and quantum noise suppression via advanced interferometric techniques. Particular emphasis will be placed on the interplay between detector design, environmental noise, and control systems.