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We construct models of static spherical distributions of perfect fluid in trace--free Einstein gravity theory. The equations governing the gravitational field are equivalent to the standard Einstein's equations however, their presentation…

广义相对论与量子宇宙学 · 物理学 2017-08-23 Sudan Hansraj , Rituparno Goswami , George Ellis , Njabulo Mkhize

We present a forecast for the upcoming Einstein Telescope (ET) interferometer with two new methods to infer cosmological parameters. We consider the emission of Gravitational Waves (GWs) from compact binary coalescences, whose…

宇宙学与河外天体物理 · 物理学 2024-05-15 Giovanni Antinozzi , Matteo Martinelli , Roberto Maoli

Double neutron stars are one of the most promizing sources for terrestrial gravitational wave interferometers. For actual interferometers and their planned upgrades, the probability of having a signal present in the data is small, but as…

广义相对论与量子宇宙学 · 物理学 2014-11-20 T. Regimbau , Scott A. Hughes

Gravitational wave signals from compact binary coalescences offer a powerful and reliable probe of General Relativity. To date, the LIGO-Virgo-KAGRA collaboration has provided stringent consistency tests of General Relativity predictions.…

广义相对论与量子宇宙学 · 物理学 2025-11-12 Andrea Begnoni , Walter Del Pozzo , Matteo Pegorin , Joachim Pomper , Angelo Ricciardone

We develop a new multi-detector signal-based discriminator to improve the sensitivity of searches for gravitational waves from compact binary coalescences. The new statistic is the traditional $\chi^2$ computed on a null-stream synthesized…

广义相对论与量子宇宙学 · 物理学 2019-12-30 William Dupree , Sukanta Bose

We formulate the data analysis problem for the detection of the Newtonian coalescing-binary signal by a network of laser interferometric gravitational wave detectors that have arbitrary orientations, but are located at the same site. We use…

广义相对论与量子宇宙学 · 物理学 2009-07-09 Sukanta Bose , Sanjeev V. Dhurandhar , Archana Pai

The Einstein Telescope (ET), along with other third-generation gravitational wave (GW) detectors, will be a key instrument for detecting GWs in the coming decades. However, analyzing the data and estimating source parameters will be…

Newtonian noise in gravitational wave detectors originates from density fluctuations in the adjacency of the interferometer mirrors. At the Einstein Telescope, this noise source is expected to be dominant for low frequencies. Its impact is…

天体物理仪器与方法 · 物理学 2025-03-17 Patrick Schillings , Johannes Erdmann

Compact boson star binaries are hypothetical sources for ground-based and space gravitational-wave detectors. Their signal would be a messenger for novel fundamental fields and could shed light on the dark matter. In this work, we further…

广义相对论与量子宇宙学 · 物理学 2023-08-09 Massimo Vaglio , Costantino Pacilio , Andrea Maselli , Paolo Pani

We discuss the power of third-generation gravitational wave detectors to constrain cosmographic parameters in the case of electromagnetically bright standard sirens focusing on the specific case of the Einstein Telescope. We analyze the…

广义相对论与量子宇宙学 · 物理学 2022-03-15 Josiel Mendonça Soares de Souza , Riccardo Sturani , Jailson Alcaniz

Increasing the sensitivity of a gravitational-wave (GW) detector improves our ability to measure the characteristics of detected sources. It also increases the number of weak signals that contribute to the data. Because GW detectors have…

广义相对论与量子宇宙学 · 物理学 2009-11-06 Tania Regimbau , Scott A. Hughes

The Einstein Telescope (ET) will be the next generation gravitational wave observatory in Europe with a sensitivity reaching beyond the CMB into the dark era of the Universe. Each corner of the triangular baseline design is the center of…

A design study is currently in progress for a third generation gravitational-wave (GW) detector called Einstein Telescope (ET). An important kind of source for ET will be the inspiral and merger of binary neutron stars (BNS) up to $z \sim…

宇宙学与河外天体物理 · 物理学 2011-02-02 W. Zhao , C. Van Den Broeck , D. Baskaran , T. G. F. Li

Gravitational waves are radiative solutions of space-time dynamics predicted by Einstein's theory of General Relativity. A world-wide array of large-scale and highly sensitive interferometric detectors constantly scrutinizes the geometry of…

广义相对论与量子宇宙学 · 物理学 2019-08-15 Eric Chassande-Mottin

Data from gravitational wave detectors are recorded as time series that include contributions from myriad noise sources in addition to any gravitational wave signals. When regularly sampled data are available, such as for ground based and…

广义相对论与量子宇宙学 · 物理学 2020-12-23 Neil J. Cornish

A solution of linearized Einstein field equations in vacuum is given and discussed. First it is shown that, computing from our particular metric the linearized connections, the linearized Riemann tensor and the linearized Ricci tensor, the…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Christian Corda

We present an estimation of the noise induced by scattered light inside the main arms of the Einstein Telescope (ET) gravitational wave detector. Both ET configurations for high- and low-frequency interferometers are considered, for which…

广义相对论与量子宇宙学 · 物理学 2023-07-27 M. Andrés-Carcasona , A. Macquet , M. Martínez , Ll. M. Mir , H. Yamamoto

When modified theories of gravity are considered, at most six gravitational wave polarization modes are allowed and classified in tensor modes, the only ones predicted by General Relativity (GR), along with additional vector and scalar…

宇宙学与河外天体物理 · 物理学 2022-03-29 Loris Amalberti , Nicola Bartolo , Angelo Ricciardone

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,…

天体物理仪器与方法 · 物理学 2026-03-17 Patrick Schillings , Shi Yao , Johannes Erdmann , Andreas Rietbrock

The Einstein Telescope (ET) is a proposed next-generation, underground gravitational-wave (GW) detector to be based in Europe. It will provide about an order of magnitude sensitivity increase with respect to currently operating detectors,…