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The Einstein Telescope (ET), a proposed European ground-based gravitational-wave detector of third-generation, is an evolution of second-generation detectors such as Advanced LIGO, Advanced Virgo, and KAGRA which could be operating in the…

The Einstein Telescope (ET), the European project for a third-generation gravitational-wave detector, has a reference configuration based on a triangular shape consisting of three nested detectors with 10 km arms, where in each arm there is…

This article gives an overview of potential upgrades of second generation gravitational wave detectors and the required key technologies to improve the limiting noise sources. In addition the baseline design of the Einstein Telescope, a…

General Relativity and Quantum Cosmology · Physics 2015-06-03 Stefan Hild

The recent breakthroughs regarding the detection of compact binary mergers via gravitational waves opened up a new window to the Universe. Gravitational-wave models have been essential to this success since they are necessary to infer the…

General Relativity and Quantum Cosmology · Physics 2025-05-15 Adrian Abac , Anna Puecher , Jonathan Gair , Tim Dietrich

Einstein Telescope (ET) is a third-generation gravitational wave (GW) detector with tenfold better sensitivity compared to the advanced LIGO detectors. It will be capable of observing copious stellar mass binary black hole mergers up to a…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-30 Pinaki Roy , Tomasz Bulik

Next-generation gravitational-wave detectors will provide unprecedented sensitivity to inspiraling binary neutron stars and black holes, enabling detections at the peak of star formation and beyond. However, the signals from these systems…

Instrumentation and Methods for Astrophysics · Physics 2024-02-22 Andrew L. Miller , Neha Singh , Cristiano Palomba

Gravitational-wave black-hole spectroscopy provides a unique opportunity to test the strong-field regime of gravity and the nature of the final object formed in the aftermath of a merger. Here we investigate the prospects for black-hole…

General Relativity and Quantum Cosmology · Physics 2023-09-26 Swetha Bhagwat , Costantino Pacilio , Paolo Pani , Michela Mapelli

Among third-generation ground-based gravitational-wave detectors proposed for the next decade, the Einstein Telescope provides a unique kind of null stream $\unicode{x2014}$ the signal-free linear combination of data $\unicode{x2014}$ that…

General Relativity and Quantum Cosmology · Physics 2022-11-15 Boris Goncharov , Alexander H. Nitz , Jan Harms

The goal of this talk is to give an overview of the current status of the development of the Einstein Telescope and Cosmic Explorer ground based gravitational wave (GW) detectors and of their foreseen scientific goals. These detectors will…

General Relativity and Quantum Cosmology · Physics 2025-06-23 Matteo Di Giovanni

The Einstein Telescope (ET) is a third-generation underground gravitational-wave observatory designed to extend the detection sensitivity down to a few Hertz. Newtonian noise is expected to limit the low-frequency sensitivity of ET,…

Instrumentation and Methods for Astrophysics · Physics 2026-03-17 Patrick Schillings , Shi Yao , Johannes Erdmann , Andreas Rietbrock

Einstein Telescope (ET) is a project of third generation gravitational wave (GW) detector with a planned sensitivity 10 times better than current detectors such as Advanced LIGO and Advanced Virgo. The high rate of GW signals expected in…

General Relativity and Quantum Cosmology · Physics 2025-01-13 Adrian Macquet , Tito Dal Canton , Tania Regimbau

With a fantastic sensitivity improving significantly over the advanced GW detectors, Einstein Telescope (ET) will be able to observe hundreds of thousand inspiralling double compact objects per year. By virtue of gravitational lensing…

High Energy Astrophysical Phenomena · Physics 2018-03-07 Xuheng Ding , Marek Biesiada , Zong-Hong Zhu

Gravitational wave experiments have entered a new stage which gets us closer to the opening a new observational window on the Universe. In particular, the Einstein Telescope (ET) is designed to have a fantastic sensitivity that will provide…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Aleksandra Piórkowska , Marek Biesiada , Zong-Hong Zhu

Recently, the design study `Einstein gravitational wave Telescope' (ET) has been funded within the European FP7 framework. The ambitious goal of this project is to provide a conceptual design of a detector with a hundred times better…

General Relativity and Quantum Cosmology · Physics 2008-11-24 Stefan Hild , Simon Chelkowski , Andreas Freise

Unlike the electromagnetic radiation from astrophysical objects, gravitational waves (GWs) from binary star mergers have much longer wavelengths and are coherent. For ground-based GW detectors, when the lens object between the source and…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-05 Kai Liao , Shuxun Tian , Xuheng Ding

Einstein Probe is a small mission dedicated to time-domain high-energy astrophysics. Its primary goals are to discover high-energy transients and to monitor variable objects in the $0.5-4~$keV X-rays, at higher sensitivity by one order of…

By being the first observatory to survey the source rich low frequency region of the gravitational wave spectrum, the Laser Interferometer Space Antenna (LISA) will revolutionize our understanding of the Cosmos. For the first time we will…

Astrophysics · Physics 2008-11-26 Louis J. Rubbo

The Einstein Telescope faces a critical data analysis challenge with correlated noise, often overlooked in current parameter estimation analyses. We address this issue by presenting the statistical formulation of the likelihood that…

General Relativity and Quantum Cosmology · Physics 2025-09-03 Francesco Cireddu , Milan Wils , Isaac C. F. Wong , Peter T. H. Pang , Tjonnie G. F. Li , Walter Del Pozzo

The Einstein Telescope is a third-generation underground gravitational wave observatory designed to achieve unprecedented sensitivity down to 3 Hz. Waves propagating in the soil due to anthropogenic or natural vibration sources generate…

Applied Physics · Physics 2026-04-16 Pieter Reumers , Xhorxha Kuci , Stijn François , Geert Degrande