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Current gravitational wave (GW) detections rely on the existence of libraries of theoretical waveforms. Consequently, finding new physics with GWs requires libraries of non-standard models, which are computationally demanding. We discuss…

General Relativity and Quantum Cosmology · Physics 2022-03-03 Felipe F. Freitas , Carlos A. R. Herdeiro , António P. Morais , António Onofre , Roman Pasechnik , Eugen Radu , Nicolas Sanchis-Gual , Rui Santos

Gravitational-wave data analysis is rapidly absorbing techniques from deep learning, with a focus on convolutional networks and related methods that treat noisy time series as images. We pursue an alternative approach, in which waveforms…

Instrumentation and Methods for Astrophysics · Physics 2019-05-31 Alvin J. K. Chua , Chad R. Galley , Michele Vallisneri

Similar to light, gravitational waves (GWs) can be lensed. Such lensing phenomena can magnify the waves, create multiple images observable as repeated events, and superpose several waveforms together, inducing potentially discernible…

General Relativity and Quantum Cosmology · Physics 2021-07-19 Kyungmin Kim , Joongoo Lee , Robin S. H. Yuen , Otto Akseli Hannuksela , Tjonnie G. F. Li

In the multi-messenger astronomy era, accurate sky localization and low latency time of gravitational-wave (GW) searches are keys in triggering successful follow-up observations on the electromagnetic counterpart of GW signals. We, in this…

Instrumentation and Methods for Astrophysics · Physics 2020-04-08 Kyungmin Kim , Tjonnie G. F. Li , Rico K. L. Lo , Surabhi Sachdev , Robin S. H. Yuen

The gravitational wave emission from the merging binary neutron star system GW170817 arrived full of tidal information which can be used to probe the fundamental ultra-dense nuclear physics residing in these stars. In previous work, we used…

General Relativity and Quantum Cosmology · Physics 2020-09-23 Zack Carson , Andrew W. Steiner , Kent Yagi

We describe a novel, very fast and robust, directed search incoherent method for periodic gravitational waves (GWs) from neutron stars in binary systems. As directed search, we assume the source sky position to be known with enough…

Instrumentation and Methods for Astrophysics · Physics 2017-06-07 Paola Leaci , Pia Astone , Sabrina D'Antonio , Sergio Frasca , Cristiano Palomba , Ornella Piccinni , Simone Mastrogiovanni

Gravitational waves (GWs) propagating through the universe can be microlensed by stellar and intermediate-mass objects. Lensing induces frequency-dependent amplification of GWs, which can be computed using \texttt{GLoW}, an accurate code…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-12 Marienza Caldarola , Srashti Goyal , Nihar Gupte , Stephen R. Green , Miguel Zumalacárregui

Gravitational wave (GW) astronomy has revolutionized our capacity to explore nature. The next generation of observatories, among which the space-borne detector Laser Interferometer Space Antenna LISA, is expected to yield orders of…

General Relativity and Quantum Cosmology · Physics 2024-12-06 Henri Inchauspé , Silvia Gasparotto , Diego Blas , Lavinia Heisenberg , Jann Zosso , Shubhanshu Tiwari

Deep Learning (DL) models can be used to tackle time series analysis tasks with great success. However, the performance of DL models can degenerate rapidly if the data are not appropriately normalized. This issue is even more apparent when…

Computational Finance · Quantitative Finance 2019-09-24 Nikolaos Passalis , Anastasios Tefas , Juho Kanniainen , Moncef Gabbouj , Alexandros Iosifidis

This paper aims to predict radio channel variations over time by deep learning from channel observations without knowledge of the underlying channel dynamics. In next-generation wideband cellular systems, multicarrier transmission for…

Information Theory · Computer Science 2022-03-14 Heunchul Lee , Jaeseong Jeong , Zhao Wang

Pulsar timing arrays recently found evidence for a gravitational wave background (GWB), likely the stochastic overlap of GWs from many supermassive black hole binaries. Anticipating a continuous gravitational wave (CW) detection from a…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-08 Emiko C. Gardiner , Bence Bécsy , Luke Zoltan Kelley , Neil J. Cornish

Next-generation ground-based gravitational-wave (GW) detectors are expected to detect millions of binary black hole mergers during their operation period. A small fraction ($\sim 0.1 - 1\%$) of them will be strongly lensed by intervening…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-13 Souvik Jana , Shasvath J. Kapadia , Tejaswi Venumadhav , Surhud More , Parameswaran Ajith

As of this moment, fifty gravitational waves (GW) detections have been announced, thanks to the observational efforts of the LIGO-Virgo Collaboration, working with the Advanced LIGO and the Advanced Virgo interferometers. The detection of…

Instrumentation and Methods for Astrophysics · Physics 2021-12-30 Filip Morawski , Michał Bejger , Elena Cuoco , Luigia Petre

The increasing sensitivity of current and upcoming gravitational-wave (GW) detectors poses stringent requirements on the accuracy of the GW models used for data analysis. If these requirements are not met, systematic errors could dominate…

General Relativity and Quantum Cosmology · Physics 2025-08-29 Lorenzo Pompili , Alessandra Buonanno , Michael Pürrer

Space-based gravitational wave (GW) detection is one of the most anticipated GW detection projects in the next decade, which promises to detect abundant compact binary systems. At present, deep learning methods have not been widely explored…

General Relativity and Quantum Cosmology · Physics 2024-03-07 Ruijun Shi , Yue Zhou , Tianyu Zhao , Zhoujian Cao , Zhixiang Ren

Prediction and control of chemical mixing are vital for many scientific areas such as subsurface reactive transport, climate modeling, combustion, epidemiology, and pharmacology. Due to the complex nature of mixing in heterogeneous and…

Machine Learning · Computer Science 2021-12-15 N. V. Jagtap , M. K. Mudunuru , K. B. Nakshatrala

The Coherent WaveBurst (cWB) search algorithm identifies generic gravitational wave (GW) signals in the LIGO-Virgo strain data. We propose a machine learning (ML) method to optimize the pipeline sensitivity to the special class of GW…

General Relativity and Quantum Cosmology · Physics 2021-07-21 Tanmaya Mishra , Brendan O'Brien , V. Gayathri , Marek Szczepanczyk , Shubhagata Bhaumik , Imre Bartos , Sergey Klimenko

Gravitational waves carry unique information about high-energy astrophysical events such as the inspiral and merger of neutron stars and black holes, core collapse in massive stars, and other sources. Large gravitational wave (GW) detectors…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Peter S. Shawhan

By now, tens of gravitational-wave (GW) events have been detected by the LIGO and Virgo detectors. These GWs have all been emitted by compact binary coalescence, for which we have excellent predictive models. However, there might be other…

Instrumentation and Methods for Astrophysics · Physics 2020-11-25 Tom Marianer , Dovi Poznanski , J. Xavier Prochaska

Overlapping gravitational wave (GW) signals are expected in the third-generation (3G) GW detectors, leading to one of the major challenges in GW data analysis. Inference of overlapping GW sources is complicated - it has been reported that…

General Relativity and Quantum Cosmology · Physics 2025-07-08 Qian Hu