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View article: Machine Learning Confirms GW231123 is a “Lite” Intermediate Mass Black Hole Merger
Machine Learning Confirms GW231123 is a “Lite” Intermediate Mass Black Hole Merger Open
The LIGO–Virgo–KAGRA Collaboration recently reported GW231123, a black hole merger with total mass of around 190–265 M ⊙ . This event adds to the growing evidence of “lite” intermediate mass black hole (IMBH) discoveries of postmerger blac…
View article: Binary Neutron Stars from the Moon: Early Warnings and Precision Science for the Artemis Era
Binary Neutron Stars from the Moon: Early Warnings and Precision Science for the Artemis Era Open
Binary neutron star mergers are unique probes of matter at extreme density and standard candles of cosmic expansion. The only such event observed in both gravitational waves and electromagnetic radiation, GW170817, revealed the origin of h…
View article: Massive Double White Dwarf Binary Mergers from the Moon: Extending the Reach of Multimessenger Astrophysics
Massive Double White Dwarf Binary Mergers from the Moon: Extending the Reach of Multimessenger Astrophysics Open
We explore the potential of lunar-based gravitational-wave detectors to broaden the multimessenger astrophysics landscape by detecting mergers of massive ( M 1 , M 2 > 1 M ⊙ ) double white dwarf (WD) binaries. These systems are potential p…
View article: Potential for Lunar Interior Science by the Gravitational-Wave Detector LILA
Potential for Lunar Interior Science by the Gravitational-Wave Detector LILA Open
The Laser Interferometer Lunar Antenna (LILA), a concept for measuring sub-Hz gravitational waves on the Moon, would use laser strainmeters to obtain extremely sensitive strain measurements from 1 mHz to 1 Hz. With proposed strain sensitiv…
View article: Fundamental Noise and Gravitational-Wave Sensitivity of the Laser Interferometer Lunar Antenna (LILA)
Fundamental Noise and Gravitational-Wave Sensitivity of the Laser Interferometer Lunar Antenna (LILA) Open
The Earth's Moon presents a uniquely advantageous environment for detecting astrophysical gravitational waves (GWs) in the frequency range of millihertz to decihertz. Unlike Terrestrial GW detectors, the quiet seismic environment of the Mo…
View article: Properties of “Lite” Intermediate-mass Black Hole Candidates in LIGO-Virgo’s Third Observing Run
Properties of “Lite” Intermediate-mass Black Hole Candidates in LIGO-Virgo’s Third Observing Run Open
Over a hundred gravitational-wave (GW) detections and candidates have been reported from the first three observing runs of the Advanced LIGO-Virgo-KAGRA (LVK) detectors. Among these, the most intriguing events are binary black hole mergers…
View article: A Tale of Two Black Holes: Multiband Gravitational-wave Measurement of Recoil Kicks
A Tale of Two Black Holes: Multiband Gravitational-wave Measurement of Recoil Kicks Open
The nonlinear dynamics of General Relativity leave their imprint on remnants of black hole mergers in the form of a recoil “kick.” The kick has profound astrophysical implications across the black hole mass spectrum, from stellar-mass to s…
View article: No Glitch in the Matrix: Robust Reconstruction of Gravitational Wave Signals under Noise Artifacts
No Glitch in the Matrix: Robust Reconstruction of Gravitational Wave Signals under Noise Artifacts Open
Gravitational wave (GW) observations by ground-based detectors such as LIGO and Virgo have transformed astrophysics, enabling the study of compact binary systems and their mergers. However, transient noise artifacts, or “glitches,” pose a …
View article: A Sea of Black Holes: Characterizing the LISA Signature for Stellar-origin Black Hole Binaries
A Sea of Black Holes: Characterizing the LISA Signature for Stellar-origin Black Hole Binaries Open
Observations by the LIGO, Virgo, and KAGRA (LVK) detectors have provided new insights into the demographics of stellar-origin black hole binaries (sBHBs). A few years before gravitational-wave signals from sBHB mergers are recorded in the …
View article: Properties of 'Lite' Intermediate-Mass Black Hole Candidates in LIGO-Virgo's Third Observing Run
Properties of 'Lite' Intermediate-Mass Black Hole Candidates in LIGO-Virgo's Third Observing Run Open
Over a hundred gravitational-wave (GW) detections and candidates have been reported from the first three observing runs of the Advanced LIGO-Virgo-KAGRA (LVK) detectors. Among these, the most intriguing events are binary black hole mergers…
View article: Pre-trained Audio Transformer as a Foundational AI Tool for Gravitational Waves
Pre-trained Audio Transformer as a Foundational AI Tool for Gravitational Waves Open
As gravitational wave detectors become more advanced and sensitive, the number of signals recorded by Advanced LIGO and Virgo from merging compact objects is expected to rise dramatically. This surge in detection rates necessitates the dev…
View article: No Glitch in the Matrix: Robust Reconstruction of Gravitational Wave Signals Under Noise Artifacts
No Glitch in the Matrix: Robust Reconstruction of Gravitational Wave Signals Under Noise Artifacts Open
Gravitational wave observations by ground based detectors such as LIGO and Virgo have transformed astrophysics, enabling the study of compact binary systems and their mergers. However, transient noise artifacts, or glitches, pose a signifi…
View article: Distinguishing the Demographics of Compact Binaries with Merger Entropy Index
Distinguishing the Demographics of Compact Binaries with Merger Entropy Index Open
The coalescence of binary black holes and neutron stars increases the entropy in the universe. The release of entropy from the inspiral stage to the merger depends primarily on the mass and spin vectors of the compact binary. In this study…
View article: Navigating Unknowns: Deep Learning Robustness for Gravitational-wave Signal Reconstruction
Navigating Unknowns: Deep Learning Robustness for Gravitational-wave Signal Reconstruction Open
We present a rapid and reliable deep-learning-based method for gravitational-wave (GW) signal reconstruction from elusive, generic binary black hole mergers in LIGO data. We demonstrate that our model, AWaRe , effectively recovers GWs with…
View article: A Sea of Black Holes: Characterizing the LISA Signature for Stellar-Origin Black Hole Binaries
A Sea of Black Holes: Characterizing the LISA Signature for Stellar-Origin Black Hole Binaries Open
Observations by the LIGO, Virgo and KAGRA (LVK) detectors have provided new insights in the demographics of stellar-origin black hole binaries (sBHB). A few years before gravitational-wave signals from sBHB mergers are recorded in the LVK …
View article: Reconstruction of Binary Black Hole Harmonics in LIGO Using Deep Learning
Reconstruction of Binary Black Hole Harmonics in LIGO Using Deep Learning Open
Gravitational-wave signals from coalescing compact binaries in the LIGO and Virgo interferometers are primarily detected by the template-based matched filtering method. While this method is optimal for stationary and Gaussian data scenario…
View article: A Tale of Two Black Holes: Multiband Gravitational-Wave Measurement of Recoil Kicks
A Tale of Two Black Holes: Multiband Gravitational-Wave Measurement of Recoil Kicks Open
The non-linear dynamics of General Relativity leave their imprint on remnants of black hole mergers in the form of a recoil ``kick''. The kick has profound astrophysical implications across the black hole mass range from stellar to super-m…
View article: Navigating Unknowns: Deep Learning Robustness for Gravitational Wave Signal Reconstruction
Navigating Unknowns: Deep Learning Robustness for Gravitational Wave Signal Reconstruction Open
We present a rapid and reliable deep learning-based method for gravitational wave signal reconstruction from elusive, generic binary black hole mergers in LIGO data. We demonstrate that our model, \texttt{AWaRe}, effectively recovers gravi…
View article: Reconstruction of binary black hole harmonics in LIGO using deep learning
Reconstruction of binary black hole harmonics in LIGO using deep learning Open
Gravitational wave signals from coalescing compact binaries in the LIGO and Virgo interferometers are primarily detected by the template based matched filtering method. While this method is optimal for stationary and Gaussian data scenario…
View article: A new approach to constrain the Hubble expansion rate at high redshifts by gravitational waves
A new approach to constrain the Hubble expansion rate at high redshifts by gravitational waves Open
Detection of massive binary black hole (BBH) mergers at high redshifts is a target for LISA space mission. While the individual masses of a BBH merger are redshifted, the mass ratio of BBH mergers is independent of their redshift. Therefor…
View article: Snowmass2021 Cosmic Frontier White Paper: Future Gravitational-Wave Detector Facilities
Snowmass2021 Cosmic Frontier White Paper: Future Gravitational-Wave Detector Facilities Open
The next generation of gravitational-wave observatories can explore a wide range of fundamental physics phenomena throughout the history of the universe. These phenomena include access to the universe's binary black hole population through…
View article: Thermodynamics to infer the astrophysics of binary black hole mergers
Thermodynamics to infer the astrophysics of binary black hole mergers Open
We introduce the Merger Entropy Index ($\mathcal{I}_\mathrm{BBH}$), a new parameter to measure the efficiency of entropy transfer for any generic binary black hole merger in General Relativity. We find that $\mathcal{I}_\mathrm{BBH}$ is bo…
View article: Assessing the readiness of numerical relativity for LISA and 3G detectors
Assessing the readiness of numerical relativity for LISA and 3G detectors Open
Future detectors such as LISA promise signal-to-noise ratios potentially in the thousands and data containing simultaneous signals. Accurate numerical relativity waveforms will be essential to maximize the science return. A question of int…
View article: Probing the nature of black holes: Deep in the mHz gravitational-wave sky
Probing the nature of black holes: Deep in the mHz gravitational-wave sky Open
Black holes are unique among astrophysical sources: they are the simplest macroscopic objects in the Universe, and they are extraordinary in terms of their ability to convert energy into electromagnetic and gravitational radiation. Our cap…
View article: Gravitational-wave Lunar Observatory for Cosmology
Gravitational-wave Lunar Observatory for Cosmology Open
Several large-scale experimental facilities and space-missions are being suggested to probe the universe across the gravitational-wave (GW) spectrum. Here we propose Gravitational-wave Lunar Observatory for Cosmology (GLOC) - the first con…
View article: The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range
The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range Open
Since 2015 the gravitational-wave observations of LIGO and Virgo have transformed our understanding of compact-object binaries. In the years to come, ground-based gravitational-wave observatories such as LIGO, Virgo, and their successors w…