Leveraging rapid parameter estimates for efficient gravitational-wave Bayesian inference via posterior repartitioning

arXiv:2601.21630 · gr-qc, astro-ph.HE, astro-ph.IM · Submitted 2026-08-19 · Read on arXiv

Metha Prathaban, Charlie Hoy, Michael J. Williams

gr-qc, astro-ph.HE, astro-ph.IM

Submitted: 2026-08-19

Updated: 2026-08-20

Code: https://github.com/mrosep/margarine_

Terminology

• Normalizing Flow — 19× in this paper · explained in 3 episodes
• Bayesian Inference — 17× in this paper · explained in 5 episodes
• Robustness — 11× in this paper · explained in 5 episodes
• Calibration — 6× in this paper · explained in 7 episodes
• Normalizing Flows — 6× in this paper · explained in 4 episodes
• Accuracy — 4× in this paper · explained in 1 episode
• Consistency — 3× in this paper · explained in 3 episodes
• Fidelity — 3× in this paper · explained in 2 episodes
• Core — 2× in this paper · explained in 2 episodes
• Kullback-Leibler (KL) Divergence — 2× in this paper · explained in 3 episodes
• Area Law — 1× in this paper · explained in 1 episode
• Computational overhead — 1× in this paper · explained in 2 episodes
• Failure Modes — 1× in this paper · explained in 3 episodes
• Information Gain — 1× in this paper · explained in 2 episodes
• Laser Interferometer Space Antenna — 1× in this paper
• Simulation-based Inference — 1× in this paper · explained in 2 episodes

Sources

• GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients
• GWTC-4.0: Population Properties of Merging Compact Binaries
• GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation
• Tests of General Relativity with GWTC-3
• Reexamining Evidence of a Pair-Instability Mass Gap in the Binary Black Hole Population
• Living on the edge: Testing for compact population features at the edges of parameter space
• A subpopulation of low-mass, spinning black holes: signatures of dynamical assembly
• Testing the nature of compact objects in the lower mass gap using gravitational wave observations
• Do both black holes spin in merging binaries? Evidence from GWTC-4 and astrophysical implications
• Orbital Eccentricity and Spin-Orbit Misalignment Are Evidence that Neutron Star-Black Hole Mergers Form through Triple Star Evolution
• Prospects for Observing and Localizing Gravitational-Wave Transients with Advanced LIGO, Advanced Virgo and KAGRA
• Advanced LIGO
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Overview of KAGRA: Detector design and construction history
• Rapid and accurate parameter inference for coalescing, precessing compact binaries
• Fast marginalization algorithm for optimizing gravitational wave detection, parameter estimation and sky localization
• A novel scheme for rapid parallel parameter estimation of gravitational waves from compact binary coalescences
• Fast likelihood evaluation using meshfree approximations for reconstructing compact binary sources
• VARAHA: A Fast Non-Markovian sampler for estimating Gravitational-Wave posteriors
• Robust, Rapid, and Simple Gravitational-wave Parameter Estimation

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