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Physics Preprint PDF DOI

Finding the one: identifying the host of compact binary mergers

Alberto Salvarese, Hsin-Yu Chen, Daniel E. Holz · 2026

Finding the host galaxies of stellar-mass compact binary mergers will open a new window for studying their formation histories and measuring key cosmological parameters, such as the Hubble constant. T…

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AI & Data Science Preprint PDF DOI

KAYRA: A Microservice Architecture for AI-Assisted Karyotyping with Cloud and On-Premise Deployment

Attila Pinter, Javier Rico, Attila Repai, Jalal Al-Afandi, Adrienn Eva Borsy, Andras Kozma, Hajnalka Andrikovics, Gyorgy Cserey · 2026

We present KAYRA, an end-to-end karyotyping system that operates inside the operational constraints of a clinical cytogenetic laboratory. KAYRA is architected as a containerized microservice pipeline …

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Physics Preprint PDF DOI

Constraints on the Primordial Black Hole Abundance using Pulsar Parameter Drifts

Yan-Chen Bi, Yu-Mei Wu, Qing-Guo Huang · 2026

Primordial black holes (PBHs) provide a compelling interpretation for the binary black holes (BBHs) observed by ground-based gravitational-wave (GW) detectors, especially for those BBHs in the theoret…

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Physics Preprint PDF DOI

How lonely are the Binary Compact Objects Detected by the LIGO-Virgo-KAGRA Collaboration?

Devesh Giri, Suvodip Mukherjee · 2026

Gravitational-wave (GW) observations of compact binary coalescences (CBCs) are traditionally interpreted under the assumption that the binary evolves in isolation. However, in realistic astrophysical …

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Physics Preprint PDF DOI

Mitigating Systematic Errors in Parameter Estimation of Binary Black Hole Mergers in O1-O3 LIGO-Virgo Data

Sumit Kumar, Max Melching, Frank Ohme, Harsh Narola, Tom Dooney, Chris Van Den Broeck · 2026

Systematic errors in the parameter estimation (PE) of gravitational wave (GW) mergers can arise from various sources, including waveform systematics, noise mischaracterization, data analysis artifacts…

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Physics Preprint PDF DOI

Interpretable Analytic Formulae for GWTC-4 Binary Black Hole Population Properties via Symbolic Regression

Chayan Chatterjee · 2026

Recent LIGO-Virgo-KAGRA (LVK) analyses have revealed complex structure in the binary black hole (BBH) population, including distinct features in the primary mass spectrum and nontrivial spin-mass corr…

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Physics Preprint PDF DOI

Merger rate of initially clustered primordial black holes for the two-body channel

Kentaro Kasai, Masahiro Kawasaki, Kai Murai, Shunsuke Neda · 2026

Primordial black holes (PBHs) may form an initially clustered population depending on their production mechanism. Motivated by binary black-hole merger events observed by gravitational-wave interferom…

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Physics Preprint PDF DOI

Investigating the formation channel of GW231123: Population III stars or hierarchical mergers?

Federico Angeloni, Konstantinos Kritos, Raffaella Schneider, Emanuele Berti, Luca Graziani, Stefano Torniamenti, Michela Mapelli, Ataru Tanikawa · 2026

The gravitational wave event GW231123, with component black hole masses lying within or above the pair-instability mass gap, poses a significant challenge to current stellar evolution models. In this …

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Physics Preprint PDF DOI

Binary Evolution Can Mimic the Pair-Instability Mass Gap in Black Hole Mergers

Aleksandra Olejak · 2026

The recent O4a release from the LIGO-Virgo-KAGRA collaboration, which significantly increased the number of gravitational-wave (GW) detections, reveals features with potentially important astrophysica…

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Physics Preprint PDF DOI

Hawking area law in quantum gravity

Gianluca Calcagni · 2026

We show that the LIGO--Virgo--KAGRA (LVK) verification of Hawking area law carries profound consequences for quantum gravity if such a law is postulated to hold exactly. The observed mergers can be pr…

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Physics Preprint PDF DOI

Testing cosmological isotropy with gravitational waves and gamma-ray bursts

Brian H. Y. Cheng, Donniel C. Cruz, Otto A. Hannuksela, Davendra S. Hassan, Christian Heiderijk, Leo Q. Hu, Souvik Jana, Jinwon Kim, Albert K. H. Kong, Peony K. K. Lai, Samuel C. Lange, Samson H. W. Leong, Matteo Lulli, Li-Ting Ma, Paul Martens, Boris H-L. Ng, Thomas C. K. Ng, Surojit Saha, Gwangeon Seong, Helen Xian, Yanyan Zheng · 2026

The cosmological principle asserts that the Universe is homogeneous and isotropic on large enough scales. However, alternative cosmological models can bring about anisotropies through local inhomogene…

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Physics Preprint PDF DOI

Measuring the rate of glitches in interferometric gravitational wave detectors with a hierarchical Bayesian model

Gregory Ashton, Colm Talbot, Andrew Lundgren, Ann-Kristin Malz, Joseph Areeda · 2026

Ground-based gravitational wave detectors are now routinely surveying the dark Universe, finding hundreds of collisions between compact objects such as black holes and neutron stars. However, terrestr…

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Physics Preprint PDF DOI

Gravitational-wave astronomy requires population-informed parameter estimation

Matthew Mould, Rodrigo Tenorio, Davide Gerosa · 2026

Gravitational-wave events are interpreted in terms of Bayesian posteriors for their source properties inferred under unphysical reference priors. Though these parameter estimates are important interme…

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Physics Preprint PDF DOI

Search for CBCs with SSM Components in Data from The First Part of LVK Fourth Observing Run

Ines Bentara · 2026

Star evolution models predict the lightest compact objects in the universe to have masses greater than that of the Sun. Nonetheless, alternative scenarios could lead to the formation of sub-solar mass…

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Physics Preprint PDF DOI

Investigating the effect of sensitivity of KAGRA on sky localization of gravitational-wave sources from compact binary coalescences

Alvin K. Y. Li, Peony K. K. Lai, Elwin K. Y. Li, Otto A. Hannuksela · 2026

The addition of KAGRA to the global gravitational-wave detector network introduces new baselines and complementary antenna response patterns that can enhance sky localization for compact binary coales…

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Physics Preprint PDF DOI

Repopulating the pair-instability mass gap without sustained growth to massive IMBHs: the case of 47\,Tuc

Debatri Chattopadhyay, Daniel Marin Pina, Mark Gieles, Fabio Antonini, Fotios Fronimos Pouliasis · 2026

We model the formation and retention of the most massive black hole (BH) in 47~Tuc using the semi-analytical code \texttt{cBHBd}, coupling cluster evolution with binary BH dynamics and computing merge…

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Physics Preprint PDF DOI

Probing Majoron Dark Matter with Gravitational Wave Detectors

Ippei Obata, Tsutomu T. Yanagida · 2026

The Majoron is a hypothetical (pseudo) Nambu-Goldstone boson arising from the spontaneous breaking of a global lepton number symmetry, and is known as a candidate for dark matter in our Universe. In t…

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Physics Preprint PDF DOI

Coalescing Compact Binary Parameter Estimation with Gravitational Waves in the Presence of non-Gaussian Transient Noise

Yannick Lecoeuche, Jess McIver, Alan M. Knee, Rhiannon Udall, Katie Rink, Sophie Hourihane, Simona J. Miller, Katerina Chatziioannou, TJ Massinger, Derek Davis · 2026

Data from gravitational-wave (GW) detectors often contains a high rate of non-Gaussian transient noise, known as glitches. The parameters estimated from GW signals coinciding with detector glitches ar…

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Physics Preprint PDF DOI

Neutron Star Merger Rates from Multi-messenger Observations: Clues to the Physical Origin of the Short and Long-short Gamma-ray Bursts

Zhi-Ping Jin, Yuan-Zhu Wang, Yin-Jie Li, Yun Wang, Hao Wang, Shao-Peng Tang, Da-Ming Wei · 2026

Short and long-short gamma-ray bursts (GRBs) are widely believed to be powered by neutron star mergers. In this work, we calculate local rate of such GRBs and find a relatively high value of $\sim 786…

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Physics Preprint PDF DOI

Posterior Predictive Checks for Gravitational-wave Populations: Limitations and Improvements

Simona J. Miller, Sophia Winney, Katerina Chatziioannou, Patrick M. Meyers · 2026

When selecting a model to characterize an astrophysical population, it is crucial to assess whether that model fits the data and, if not, how it can be improved. To this end, posterior predictive chec…

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