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Research papers on Gravitational waves

Recent and highly-cited academic work on gravitational waves, gathered from Semantic Scholar, CrossRef and OpenAlex.

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  1. Advanced LIGO: the next generation of gravitational wave detectors

    G. M. Harry · 2010 · Classical and Quantum Gravity · 1,300 citations

    The Advanced LIGO gravitational wave detectors are next generation instruments which will replace the existing initial LIGO detectors. They are currently being constructed and installed. Advanced LIGO strain sensitivity is designed to be about a factor 10 better than initial LIGO over a broad band and usable to 10 Hz, in contrast to 40 Hz for initial LIGO. This is expected to allow for detections and significant astrophysics in most categories of gravitational waves. To achieve this sensitivity, all hardware subsystems are being replaced with improvements. Designs and expected performance are presented for the seismic isolation, suspensions, optics and laser subsystems. Possible enhancements

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  2. LIGO: the Laser Interferometer Gravitational-Wave Observatory

    B. P. Abbott, R. Abbott, R. X. Adhikari, et al. · 2009 · Reports on Progress in Physics · 1,263 citations

    The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and study gravitational waves (GWs) of astrophysical origin. Direct detection of GWs holds the promise of testing general relativity in the strong-field regime, of providing a new probe of exotic objects such as black holes and neutron stars and of uncovering unanticipated new astrophysics. LIGO, a joint Caltech–MIT project supported by the National Science Foundation, operates three multi-kilometer interferometers at two widely separated sites in the United States. These detectors are the result of decades of worldwide technology development, design, construction and commissioning. They are now operatin

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  3. Physics, Astrophysics and Cosmology with Gravitational Waves

    Bangalore S Sathyaprakash, Bernard F. Schutz · 2009 · Living Reviews in Relativity · 878 citations

    Gravitational wave detectors are already operating at interesting sensitivity levels, and they have an upgrade path that should result in secure detections by 2014. We review the physics of gravitational waves, how they interact with detectors (bars and interferometers), and how these detectors operate. We study the most likely sources of gravitational waves and review the data analysis methods that are used to extract their signals from detector noise. Then we consider the consequences of gravitational wave detections and observations for physics, astrophysics, and cosmology.

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  4. Deep Learning for real-time gravitational wave detection and parameter estimation: Results with Advanced LIGO data

    Daniel George, Eliu A. Huerta · 2017 · Physics Letters B · 372 citations

    The recent Nobel-prize-winning detections of gravitational waves from merging black holes and the subsequent detection of the collision of two neutron stars in coincidence with electromagnetic observations have inaugurated a new era of multimessenger astrophysics. To enhance the scope of this emergent field of science, we pioneered the use of deep learning with convolutional neural networks, that take time-series inputs, for rapid detection and characterization of gravitational wave signals. This approach, Deep Filtering, was initially demonstrated using simulated LIGO noise. In this article, we present the extension of Deep Filtering using real data from LIGO, for both detection and paramet

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  5. Gravitational wave searches for ultralight bosons with LIGO and LISA

    Richard Brito, Shrobana Ghosh, Enrico Barausse, et al. · 2017 · Physical review. D/Physical review. D. · 333 citations

    Ultralight bosons can induce superradiant instabilities in spinning black holes, tapping their rotational energy to trigger the growth of a bosonic condensate. Possible observational imprints of these boson clouds include (i) direct detection of the nearly monochromatic (resolvable or stochastic) gravitational waves emitted by the condensate, and (ii) statistically significant evidence for the formation of ``holes'' at large spins in the spin versus mass plane (sometimes also referred to as ``Regge plane'') of astrophysical black holes. In this work, we focus on the prospects of LISA and LIGO detecting or constraining scalars with mass in the range ${m}_{s}\ensuremath{\in}[{10}^{\ensuremath{

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  7. The astrophysics of nanohertz gravitational waves

    Sarah Burke-Spolaor, Stephen R. Taylor, Maria Charisi, et al. · 2019 · The Astronomy and Astrophysics Review · 300 citations

    Pulsar timing array (PTA) collaborations in North America, Australia, and Europe, have been exploiting the exquisite timing precision of millisecond pulsars over decades of observations to search for correlated timing deviations induced by gravitational waves (GWs). PTAs are sensitive to the frequency band ranging just below 1 nanohertz to a few tens of microhertz. The discovery space of this band is potentially rich with populations of inspiraling supermassive black hole binaries, decaying cosmic string networks, relic post-inflation GWs, and even non-GW imprints of axionic dark matter. This article aims to provide an understanding of the exciting open science questions in cosmology, galaxy

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  8. Gravitational wave astronomy

    Bernard F. Schutz · 1999 · Classical and Quantum Gravity · 225 citations

    The first decade of the new millennium should see the first direct detections of gravitational waves. This will be a milestone or fundamental physics and it will open the new observational science of gravitational wave astronomy. But gravitational waves already play an important role in the modeling of astrophysical systems. I review here the present state of gravitational radiation theory in relativity and astrophysics, and I then look at the development of detector sensitivity over the next decade, both on the ground (such as LIGO) and in space (LISA). I review the sources of gravitational waves that are likely to play an imp rtant role in observations by first- and second-generation inter

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  9. LIGO: The Laser Interferometer Gravitational-Wave Observatory

    Peter K Fritschel · 2012 · Cambridge University Press eBooks · 44 citations

    This chapter features the USA-based LIGO, the Laser Interferometer Gravitational-Wave Observatory – the first of three case studies covering different worldwide interferometric gravitational wave detectors. In addition to describing the basic interferometer operation and its various components, we discuss the technological challenges that have been overcome for its successful operation. Introduction The prediction of gravitational waves (GWs), oscillations in the spacetime metric that propagate at the speed of light, is one of the most profound differences between Einstein's general theory of relativity and the Newtonian theory of gravity that it replaced. As discussed in Chapter 1, GWs rema

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  11. Detection of Gravitational Wave in LIGO and Significance Evaluation

    Zhiyu Chen · 2023 · Highlights in Science Engineering and Technology · 1 citations

    Gravitational wave detection plays crucial role in astrophysics and cosmology, which can prove the theoretical models as well as demonstrate the detail information in the universe. As a concept proposed based on general relativity, it has not been detected until the invention of the most advanced detectors, i.e., Laser Interferometer Gravitational-Wave Observatory (LIGO). In this paper, the state-of-art detection facility LIGO will be discussed in detail. To be specific, the detection principle of gravitational wave as well as the detection facility components and requirements will be illustrated. In addition, the significance of detecting gravitational wave will be clarified. On the path pa

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  15. THE ROLE OF GRAVITATIONAL WAVES IN ASTROPHYSICS: DETECTION AND IMPLICATIONS

    K. Sabeeh, Waqar Mahmood · 2022 · DOAJ (DOAJ: Directory of Open Access Journals)

    Gravitational waves (GWs), ripples in the fabric of spacetime predicted by Einstein’s General Theory of Relativity, have emerged as a transformative tool in modern astrophysics. Since their first direct detection in 2015 by the Laser Interferometer Gravitational-Wave Observatory (LIGO), GWs have enabled unprecedented insights into the dynamics of compact astrophysical systems such as binary black hole mergers, neutron star collisions, and potentially supernovae. This paper examines the fundamental role of gravitational waves in advancing our understanding of astrophysical phenomena, with a focus on their detection methods, underlying theoretical principles, and broad scientific implications.

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