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14 papers · 2 filters
Theoretically motivated dark electromagnetism as the origin of relativistic MOND
Felix Finster, J. M. Isidro, Claudio F. Paganini +1
The present paper is a modest attempt to initiate the research program outlined in this abstract. We propose that general relativity and relativistic MOND (RelMOND) are analogues o…
Impact of higher harmonics of gravitational radiation on the population inference of binary black holes
Mukesh Kumar Singh, Shasvath J Kapadia, Aditya Vijaykumar +1
Templates modeling just the dominant mode of gravitational radiation are generally sufficient for the unbiased parameter inference of near-equal-mass compact binary mergers. Howeve…
Unveiling Microlensing Biases in Testing General Relativity with Gravitational Waves
Anuj Mishra, N. V. Krishnendu, Apratim Ganguly
Gravitational waves (GW) from chirping binary black holes (BBHs) provide unique opportunities to test general relativity (GR) in the strong-field regime. However, testing GR can be…
Bounds on tidal charges from gravitational-wave ringdown observations
Akash K Mishra, Gregorio Carullo, Sumanta Chakraborty
Black hole solutions in the braneworld scenario are predicted to possess a tidal charge parameter, leaving imprints in the quasinormal spectrum. We conduct an extensive computation…
New approach to template banks of gravitational waves with higher harmonics: Reducing matched-filtering cost by over an order of magnitude
Digvijay Wadekar, Tejaswi Venumadhav, Ajit Kumar Mehta +5
Searches for gravitational wave events use models, or templates, for the signals of interest. The templates used in current searches in the LIGO-Virgo-Kagra (LVK) data model the do…
Fully relativistic three-dimensional Cauchy-characteristic matching for physical degrees of freedom
Sizheng Ma, Jordan Moxon, Mark A. Scheel +8
A fully relativistic three-dimensional Cauchy-characteristic matching (CCM) algorithm is implemented for physical degrees of freedom in a numerical relativity code SpECTRE. The met…
Extending black-hole remnant surrogate models to extreme mass ratios
Matteo Boschini, Davide Gerosa, Vijay Varma +19
Numerical-relativity surrogate models for both black-hole merger waveforms and remnants have emerged as important tools in gravitational-wave astronomy. While producing very accura…
Follow-up Analyses to the O3 LIGO-Virgo-KAGRA Lensing Searches
Justin Janquart, Mick Wright, Srashti Goyal +28
Along their path from source to observer, gravitational waves may be gravitationally lensed by massive objects. This results in distortions of the observed signal which can be used…
Gravitational Waves from Black-Hole Encounters: Prospects for Ground- and Galaxy-Based Observatories
Subhajit Dandapat, Michael Ebersold, Abhimanyu Susobhanan +6
Close hyperbolic encounters of black holes (BHs) generate certain Burst With Memory (BWM) events in the frequency windows of the operational, planned, and proposed gravitational wa…
Spectrogram correlated stacking: A novel time-frequency domain analysis of the Stochastic Gravitational Wave Background
Ramit Dey, Luís Felipe Longo Micchi, Suvodip Mukherjee +1
The astrophysical stochastic gravitational wave background (SGWB) originates from numerous faint sub-threshold gravitational wave (GW) signals arising from the coalescing binary co…
Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field model in 3+1 dimensions
Nikolas A. Wittek, Mekhi Dhesi, Leor Barack +10
Binary black hole simulations become increasingly more computationally expensive with smaller mass ratios, partly because of the longer evolution time, and partly because the lengt…
Open data from the third observing run of LIGO, Virgo, KAGRA and GEO
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1741
The global network of gravitational-wave observatories now includes five detectors, namely LIGO Hanford, LIGO Livingston, Virgo, KAGRA, and GEO 600. These detectors collected data…
Defining eccentricity for gravitational wave astronomy
Md Arif Shaikh, Vijay Varma, Harald P. Pfeiffer +2
Eccentric compact binary mergers are significant scientific targets for current and future gravitational wave observatories. To detect and analyze eccentric signals, there is an in…
Probing lens-induced gravitational-wave birefringence as a test of general relativity
Srashti Goyal, Aditya Vijaykumar, Jose Maria Ezquiaga +1
Theories beyond general relativity (GR) modify the propagation of gravitational waves (GWs). In some, inhomogeneities (aka. gravitational lenses) allow interactions between the met…