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Gravitational wave observations of quasicircular compact binary mergers in principle provide an arbitrarily complex likelihood over eight independent intrinsic parameters: the masses and spins of the two merging objects. In this work, we…

广义相对论与量子宇宙学 · 物理学 2022-01-05 Vera Delfavero , Richard O'Shaughnessy , Daniel Wysocki , Anjali Yelikar

Gravitational wave (GW) astronomy has consolidated its role as a new observational window to reveal the properties of compact binaries in the Universe. In particular, the discovery of the first binary neutron star coalescence, GW170817, led…

广义相对论与量子宇宙学 · 物理学 2018-12-26 Anuradha Samajdar , Tim Dietrich

The promise of multi-messenger astronomy relies on the rapid detection of gravitational waves at very low latencies ($\mathcal{O}$(1\,s)) in order to maximize the amount of time available for follow-up observations. In recent years,…

Tests of general relativity (GR) with gravitational waves (GWs) introduce additional deviation parameters in the waveform model. The enlarged parameter space makes inference computationally costly, which has so far limited systematic,…

广义相对论与量子宇宙学 · 物理学 2026-04-06 Dhruv Kumar , Ish Gupta , Bangalore Sathyaprakash

In this paper, we develop a Neural Likelihood Estimator and apply it to analyse real gravitational-wave (GW) data for the first time. We assess the usability of neural likelihood for GW parameter estimation and report the parameter space…

高能天体物理现象 · 物理学 2025-09-23 Luca Negri , Anuradha Samajdar

This paper reviews gravitational wave sources and their detection. One of the most exciting potential sources of gravitational waves are coalescing binary black hole systems. They can occur on all mass scales and be formed in numerous ways,…

The simultaneous observation of gravitational waves (GW) and prompt electromagnetic counterparts from the merger of two neutron stars can help reveal the properties of extreme matter and gravity during and immediately after the final…

高能天体物理现象 · 物理学 2023-12-11 Chayan Chatterjee , Linqing Wen

Understanding common envelope (CE) evolution is an outstanding problem in binary evolution. Although the CE phase is not driven by gravitational-wave (GW) emission, the in-spiraling binary emits GWs that passively trace the CE dynamics.…

太阳与恒星天体物理 · 物理学 2021-10-13 M. Renzo , T. Callister , K. Chatziioannou , L. A. C. van Son , C. M. F. Mingarelli , M. Cantiello , K. E. S. Ford , B. McKernan , G. Ashton

Space-based gravitational wave (GW) detectors will be able to observe signals from sources that are otherwise nearly impossible from current ground-based detection. Consequently, the well established signal detection method, matched…

广义相对论与量子宇宙学 · 物理学 2023-08-17 Tianyu Zhao , Ruoxi Lyu , He Wang , Zhoujian Cao , Zhixiang Ren

One of the goals of gravitational-wave astronomy is simultaneous detection of gravitational-wave signals from merging compact-object binaries and the electromagnetic transients from these mergers. With the next generation of advanced…

Based on the rate of gravitational-wave (GW) detections by Advanced LIGO and Virgo, we expect these detectors to observe hundreds of binary black hole mergers as they achieve their design sensitivities (within a few years). A small fraction…

广义相对论与量子宇宙学 · 物理学 2018-07-19 K. Haris , Ajit Kumar Mehta , Sumit Kumar , Tejaswi Venumadhav , Parameswaran Ajith

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…

天体物理仪器与方法 · 物理学 2019-08-13 Peter S. Shawhan

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…

广义相对论与量子宇宙学 · 物理学 2024-03-07 Ruijun Shi , Yue Zhou , Tianyu Zhao , Zhoujian Cao , Zhixiang Ren

We present here the latest development of a machine-learning pipeline for pre-merger alerts from gravitational waves coming from binary neutron stars. This work starts from the convolutional neural networks introduced in our previous paper…

广义相对论与量子宇宙学 · 物理学 2022-08-17 Grégory Baltus , Justin Janquart , Melissa Lopez , Harsh Narola , Jean-René Cudell

The coalescence of compact binaries containing neutron stars or black holes is one of the most promising signals for advanced ground-based laser interferometer gravitational-wave detectors, with the first direct detections expected over the…

高能天体物理现象 · 物理学 2015-09-02 Simon Stevenson , Frank Ohme , Stephen Fairhurst

Searches for gravitational-wave counterparts have been going in earnest since GW170817 and the discovery of AT2017gfo. Since then, the lack of detection of other optical counterparts connected to binary neutron star or black hole - neutron…

Gravitational waves from the coalescence of binary black holes can be distinguished from noise transients in a detector network through Bayesian model selection by exploiting the coherence of the signal across the network. We present a…

广义相对论与量子宇宙学 · 物理学 2022-01-05 Geraint Pratten , Alberto Vecchio

We introduce a highly-parallelizable architecture for estimating parameters of compact binary coalescence using gravitational-wave data and waveform models. Using a spherical harmonic mode decomposition, the waveform is expressed as a sum…

广义相对论与量子宇宙学 · 物理学 2015-08-06 C. Pankow , P. Brady , E. Ochsner , R. O'Shaughnessy

In the age of multi-messenger astrophysics, low-latency parameter estimation of gravitational-wave signals is essential for electromagnetic follow-up observations. In this paper, we present a new edition of the Bayesian parameter estimation…

广义相对论与量子宇宙学 · 物理学 2022-01-17 Caitlin A. Rose , Vinaya Valsan , Patrick R. Brady , Sinead Walsh , Chris Pankow

Parameterised models that predict the gravitational-wave (GW) signal from merging black holes are used to extract source properties from GW observations. The majority of research in this area has focused on developing methods capable of…

广义相对论与量子宇宙学 · 物理学 2024-09-09 Sebastian Khan