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We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 50-1000 Hz and with the frequency's time derivative in the range -1.0E-8 Hz/s to zero. Data from the fourth LIGO science run (S4)…

广义相对论与量子宇宙学 · 物理学 2014-11-18 LIGO Scientific Collaboration , B. Abbott

Trying to detect the gravitational wave (GW) signal emitted by a type II supernova is a main challenge for the GW community. Indeed, the corresponding waveform is not accurately modeled as the supernova physics is very complex; in addition,…

We present a Fisher information matrix study of the parameter estimation precision achievable by a class of future space-based, "mid-band", gravitational wave (GW) interferometers observing monochromatic signals. The mid-band is the…

广义相对论与量子宇宙学 · 物理学 2025-04-09 Manoel Felipe Sousa , Tabata Aira Ferreira , Massimo Tinto

We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the…

广义相对论与量子宇宙学 · 物理学 2016-11-23 The LIGO Scientific Collaboration , The Virgo Collaboration

Estimates of the source sky location for gravitational wave signals are likely span areas ranging up to hundreds of square degrees or more, making it very challenging for most telescopes to search for counterpart signals in the…

高能天体物理现象 · 物理学 2017-01-20 Man Leong Chan , Yi-Ming Hu , Chris Messenger , Martin Hendry , Ik Siong Heng

We apply state-of-the-art, likelihood-free statistical inference (machine-learning-based) techniques for reconstructing the spectral shape of a gravitational wave background (GWB). We focus on the reconstruction of an arbitrarily shaped…

宇宙学与河外天体物理 · 物理学 2024-12-09 Androniki Dimitriou , Daniel G. Figueroa , Bryan Zaldivar

Kilonovae represent an important electromagnetic counterpart for compact binary mergers, which could become the most commonly detected gravitational wave (GW) source. Follow-up observations, triggered by GW events, of kilonovae are…

高能天体物理现象 · 物理学 2016-01-13 Imre Bartos , Tracy L. Huard , Szabolcs Marka

Urbanization, climate change, and agricultural stress are increasing the demand for precise and timely environmental monitoring. Land Surface Temperature (LST) is a key variable in this context and is retrieved from remote sensing…

计算机视觉与模式识别 · 计算机科学 2025-12-11 Sofiane Bouaziz , Adel Hafiane , Raphael Canals , Rachid Nedjai

Advancements in the sensitivity of gravitational wave detectors have increased the detection rate of transient astrophysical signals. We improve the existing BayesWave initialization algorithm and present a rapid, low latency approximate…

广义相对论与量子宇宙学 · 物理学 2025-12-03 Sudhi Mathur , Neil J. Cornish

We have developed an {\it ab initio} deformed in-medium similarity renormalization group (IMSRG) for open-shell nuclei. This is a single-reference IMSRG in deformed Hartree-Fock (HF) basis. Deformed wave functions are more efficient in…

核理论 · 物理学 2022-07-13 Q. Yuan , S. Q. Fan , B. S. Hu , J. G. Li , S. Zhang , S. M. Wang , Z. H. Sun , Y. Z. Ma , F. R. Xu

New methods are proposed with the goal to determine absolute neutrino masses from the simultaneous observation of the bursts of neutrinos and gravitational waves emitted during a stellar collapse. It is shown that the neutronization…

高能物理 - 唯象学 · 物理学 2009-11-07 N. Arnaud , M. Barsuglia , M. A. Bizouard , F. Cavalier , M. Davier , P. Hello , T. Pradier

We investigate the potential of using gravitational wave (GW) signals from rotating core-collapse supernovae to probe the equation of state (EOS) of nuclear matter. By generating GW signals from simulations with various EOSs, we train…

We present a broadband spectrum of gravitational waves from core-collapse supernovae (CCSNe) sourced by neutrino emission asymmetries for a series of full 3D simulations. The associated gravitational wave strain probes the long-term secular…

高能天体物理现象 · 物理学 2020-10-07 David Vartanyan , Adam Burrows

We present a time-domain model for the gravitational waves emitted by equal-mass binary neutron star merger remnants for a fixed equation of state. We construct a large set of numerical relativity simulations for a single equation of state…

The detection of gravitational waves from core-collapse supernova (CCSN) explosions is a challenging task, yet to be achieved, in which it is key the connection between multiple messengers, including neutrinos and electromagnetic signals.…

天体物理仪器与方法 · 物理学 2021-03-17 M. Lopez Portilla , I. Di Palma , M. Drago , P. Cerda-Duran , F. Ricci

We present results of a search for periodic gravitational wave signals with frequency between 20 and 400 Hz, from the neutron star in the supernova remnant G347.3-0.5, using LIGO O2 public data. The search is deployed on the volunteer…

We present a theoretical background for the data analysis of the gravitational-wave signals from spinning neutron stars for Earth-based laser interferometric detectors. We introduce a detailed model of the signal including both the…

广义相对论与量子宇宙学 · 物理学 2009-12-30 Piotr Jaranowski , Andrzej Królak , Bernard F. Schutz

We develop a numerical scheme to make a high-frequency skymap of gravitational-wave backgrounds (GWBs) observed via space-based interferometer. Based on the cross-correlation technique, the intensity distribution of anisotropic GWB can be…

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

The sensitivities of ground-based gravitational-wave (GW) detectors are limited by quantum shot noise at a few hundred Hertz and above. Nonetheless, one can use a quantum-correlation technique proposed by Martynov, et al. [Phys. Rev. A 95,…

广义相对论与量子宇宙学 · 物理学 2022-10-05 Hang Yu , Denis Martynov , Rana X Adhikari , Yanbei Chen

Several theoretical waveform models have been developed over the years to capture the gravitational wave emission from the dynamical evolution of compact binary systems of neutron stars and black holes. As ground-based detectors improve…

广义相对论与量子宇宙学 · 物理学 2024-10-02 Lalit Pathak , Amit Reza , Anand S. Sengupta