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We discuss different ways that neutron stars can generate gravitational waves, describe recent improvements in modelling the relevant scenarios in the context of improving detector sensitivity, and show how observations are beginning to…

Solar and Stellar Astrophysics · Physics 2011-01-28 N. Andersson , V. Ferrari , D. I. Jones , K. D. Kokkotas , B. Krishnan , J. Read , L. Rezzolla , B. Zink

A novel method for extending frequency frontier in gravitational wave observations is proposed. It is shown that gravitational waves can excite a magnon. Thus, gravitational waves can be probed by a graviton-magnon detector which measures…

General Relativity and Quantum Cosmology · Physics 2020-03-03 Asuka Ito , Tomonori Ikeda , Kentaro Miuchi , Jiro Soda

Optical and infrared observations have thus far detected more celestial cataclysms than have been seen in gravity waves (GW). This argues that we should search for gravity wave signatures that correspond to flux variability seen at optical…

Astrophysics · Physics 2009-02-05 Christopher W. Stubbs

It is possible to make a detector which clicks after absorbing a single graviton. Similarly, it is possible to make a gravitational wave detector which can see the quantum noise induced by certain highly squeezed states of the graviton.…

General Relativity and Quantum Cosmology · Physics 2026-02-04 Daniel Carney

A world-wide array of highly sensitive interferometers stands poised to usher in a new era in astronomy with the first direct detection of gravitational waves. The data from these instruments will provide a unique perspective on extreme…

General Relativity and Quantum Cosmology · Physics 2013-02-27 Neil J. Cornish

A magnetically levitated mass couples to gravity and can act as an effective gravitational wave detector. We show that a superconducting sphere levitated in a quadrupolar magnetic field, when excited by a gravitational wave, will produce…

High Energy Physics - Phenomenology · Physics 2025-06-10 Daniel Carney , Gerard Higgins , Giacomo Marocco , Michael Wentzel

In this article, which will appear as a chapter in the Handbook of Gravitational Wave Astronomy, we will describe the detection of gravitational waves with space-based interferometric gravitational wave observatories. We will provide an…

General Relativity and Quantum Cosmology · Physics 2022-01-27 Jonathan R Gair , Martin Hewitson , Antoine Petiteau , Guido Mueller

Detecting gravitational waves with frequencies higher than 10 kHz requires new strategies. In previous papers, we proposed magnon gravitational wave detectors and gave the first limit on GHz gravitational waves by reinterpreting the…

General Relativity and Quantum Cosmology · Physics 2023-09-07 Asuka Ito , Jiro Soda

The first generation of ground-based interferometric gravitational wave detectors, LIGO, GEO and Virgo, have operated and taken data at their design sensitivities over the last few years. The data has been examined for the presence of…

General Relativity and Quantum Cosmology · Physics 2015-06-15 Marie Anne Bizouard , Maria Alessandra Papa

A brief history and various themes of mid-frequency gravitational wave detection are presented more or less following historical order -- Laser Interferometry, Atom Interferometry (AI), Torsion Bar Antenna (TOBA), and Superconducting…

General Relativity and Quantum Cosmology · Physics 2020-07-14 Wei-Tou Ni

We propose a new type of highly efficient Yagi-Uda nanoantenna and introduced a novel concept of superdirective nanoantennas based on silicon nanoparticles. In addition to the electric response, this silicon nanoantennas exhibit very strong…

We propose a gravitational wave detector based on ultrastable optical cavities enabling the detection of gravitational wave signals in the mostly unexplored $10^{-5}-1$ Hz frequency band. We illustrate the working principle of the detector…

Instrumentation and Methods for Astrophysics · Physics 2025-10-06 G. Barontini , X. Calmet , V. Guarrera , A. Smith , A. Vecchio

Resonant-mass gravitational waves detectors are reviewed from the concept of gravitational waves and its mathematical derivation, using Einstein's general relativity, to the present status of bars and spherical detectors, and their…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 Odylio Denys Aguiar

Parametric transducers, such as superconducting rf cavities, can boost the bandwidth and sensitivity of the next generation resonant antennas, thanks to a readily available technology. We have developed a fully coupled dynamic model of the…

General Relativity and Quantum Cosmology · Physics 2009-11-11 R. Ballantini , M. Bassan , A. Chincarini , G. Gemme , R. Parodi , R. Vaccarone

We derive a lower bound on the sensitivity of generic mechanical and electromagnetic gravitational wave detectors. We consider both classical and quantum detection schemes, although we focus on the former. Our results allow for a simple…

General Relativity and Quantum Cosmology · Physics 2025-06-17 Raffaele Tito D'Agnolo , Sebastian A. R. Ellis

Here we propose a new gravitational waves(GWs) detector in broad frequency band, which is operated at exceptional points(EPs) in micro cavities. The detected signal is an eigenfrequency split of the mechanical modes caused by the spatial…

Quantum Physics · Physics 2020-02-04 Jian Liu , Lei Chen , Fei He , Ka-Di Zhu

The idea of searching for gravitational waves using cavities in strong magnetic fields has recently received significant attention. Specifically, discussions focus on cavities with relatively small volumes, which are currently employed in…

General Relativity and Quantum Cosmology · Physics 2023-08-23 Kristof Schmieden , Matthias Schott

We present an application of anomaly detection techniques based on deep recurrent autoencoders to the problem of detecting gravitational wave signals in laser interferometers. Trained on noise data, this class of algorithms could detect…

General Relativity and Quantum Cosmology · Physics 2021-12-15 Eric A. Moreno , Jean-Roch Vlimant , Maria Spiropulu , Bartlomiej Borzyszkowski , Maurizio Pierini

We consider enhancing the sensitivity of future gravitational-wave detectors by adding optical filters inside the signal-recycling cavity -- an intracavity filtering scheme, which coherently feeds the sideband signal back to the…

General Relativity and Quantum Cosmology · Physics 2014-04-03 Mengyao Wang , Haixing Miao , Andreas Freise , Yanbei Chen