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Strong gravitational lenses are unique cosmological probes. These produce multiple images of a single source. Whether a single galaxy, a group or a cluster, extracting cosmologically relevant information requires an accurate modeling of the…

宇宙学与河外天体物理 · 物理学 2011-12-13 Irène Balmès

It is expected that gravitational waves, similar to electromagnetic waves, can be gravitationally lensed by intervening matters, producing multiple instances of the same signal arriving at different times from different apparent luminosity…

广义相对论与量子宇宙学 · 物理学 2023-06-14 Rico K. L. Lo , Ignacio Magana Hernandez

Sapce-borne gravitational wave antennas, such as LISA and LISA-like mission (Taiji and Tianqin), will offer novel perspectives for exploring our Universe while introduce new challenges, especially in data analysis. Aside from the known…

广义相对论与量子宇宙学 · 物理学 2024-09-17 Yuxiang Xu , Minghui Du , Peng Xu , Bo Liang , He Wang

We present data analysis methods used in detection and the estimation of parameters of gravitational wave signals from the white dwarf binaries in the mock LISA data challenge. Our main focus is on the analysis of challenge 3.1, where the…

广义相对论与量子宇宙学 · 物理学 2010-04-23 Arkadiusz Błaut , Stanislav Babak , Andrzej Królak

The millihertz gravitational-wave frequency band is expected to contain a rich symphony of signals with sources ranging from galactic white dwarf binaries to extreme mass ratio inspirals. Many of these gravitational-wave signals will not be…

天体物理仪器与方法 · 物理学 2021-09-14 Sharan Banagiri , Alexander Criswell , Tommy Kuan , Vuk Mandic , Joseph D. Romano , Stephen R. Taylor

We present a general framework for incorporating astrophysical information into Bayesian parameter estimation techniques used by gravitational wave data analysis to facilitate multi-messenger astronomy. Since the progenitors of transient…

高能天体物理现象 · 物理学 2014-10-14 XiLong Fan , Christopher Messenger , Ik Siong Heng

This is an introduction to Bayesian inference with a focus on hierarchical models and hyper-parameters. We write primarily for an audience of Bayesian novices, but we hope to provide useful insights for seasoned veterans as well. Examples…

天体物理仪器与方法 · 物理学 2025-05-26 Eric Thrane , Colm Talbot

The Laser Interferometer Space Antenna will be the first Gravitational Wave observatory in space. It is scheduled to fly in the early 2030's. LISA design predicts sensitivity levels that enable the detection a Stochastic Gravitational Wave…

天体物理仪器与方法 · 物理学 2020-12-02 Nikolaos Karnesis , Marc Lilley , Antoine Petiteau

Gravitational wave data from ground-based detectors is dominated by instrument noise. Signals will be comparatively weak, and our understanding of the noise will influence detection confidence and signal characterization. Mis-modeled noise…

广义相对论与量子宇宙学 · 物理学 2015-04-22 Tyson B. Littenberg , Neil J. Cornish

Since the very first detection of gravitational waves from the coalescence of two black holes in 2015, Bayesian statistical methods have been routinely applied by LIGO and Virgo to extract the signal out of noisy interferometric…

广义相对论与量子宇宙学 · 物理学 2020-09-23 Renate Meyer , Matthew C. Edwards , Patricio Maturana-Russel , Nelson Christensen

Understanding and dealing with inference biases in gravitational-wave (GW) parameter estimation when a plethora of signals are present in the data is one of the key challenges for the analysis of data from future GW detectors. Working…

广义相对论与量子宇宙学 · 物理学 2021-08-25 Andrea Antonelli , Ollie Burke , Jonathan R. Gair

I explore the possibility of resurrecting an old, non-Bayesian computational approach for inferring the source direction of a gravitational wave from the output of a two-detector network. The method gives the beam pattern response functions…

天体物理仪器与方法 · 物理学 2018-05-04 Tom McClain

We review and expand on a Bayesian model selection technique for the detection of gravitational waves from neutron star ring-downs associated with pulsar glitches. The algorithm works with power spectral densities constructed from…

广义相对论与量子宇宙学 · 物理学 2008-11-26 J Clark , I S Heng , M Pitkin , G Woan

Galactic ultra compact binaries are expected to be the dominant source of gravitational waves in the milli-Hertz frequency band. Of the tens of millions of galactic binaries with periods shorter than an hour, it is estimated that a few tens…

广义相对论与量子宇宙学 · 物理学 2020-07-01 Tyson Littenberg , Neil Cornish , Kristen Lackeos , Travis Robson

The space-based gravitational wave detector LISA will observe in the low-frequency gravitational-wave band (0.1 mHz up to 1 Hz). LISA will search for a variety of expected signals, and when it detects a signal it will have to determine a…

广义相对论与量子宇宙学 · 物理学 2007-05-23 B. F. Schutz

Ground-based gravitational wave laser interferometers (LIGO, GEO-600, Virgo and Tama-300) have now reached high sensitivity and duty cycle. We present a Bayesian evidence-based approach to the search for gravitational waves, in particular…

广义相对论与量子宇宙学 · 物理学 2008-11-26 John Veitch , Alberto Vecchio

We report the results of an in-depth analysis of the parameter estimation capabilities of BayesWave, an algorithm for the reconstruction of gravitational-wave signals without reference to a specific signal model. Using binary black hole…

广义相对论与量子宇宙学 · 物理学 2019-02-13 Francesco Pannarale , Ronaldas Macas , Patrick J. Sutton

We present a Monte Carlo simulation for the response of the Laser Interferometer Space Antenna (LISA) to the galactic gravitational wave background. The simulated data streams are used to estimate the number and type of binary systems that…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Seth E. Timpano , Louis J. Rubbo , Neil J. Cornish

Central to the gravitational wave detection problem is the challenge of separating features in the data produced by astrophysical sources from features produced by the detector. Matched filtering provides an optimal solution for Gaussian…

广义相对论与量子宇宙学 · 物理学 2010-12-09 Tyson B. Littenberg , Neil J. Cornish

The Laser Interferometer Space Antenna (LISA) will explore the source-rich milli-Hertz band of the gravitational wave spectrum. In contrast to ground based detectors, where typical signals are short-lived and discrete, LISA signals are…

广义相对论与量子宇宙学 · 物理学 2018-08-09 Travis Robson , Neil Cornish