Beyond what's observed: hierarchical inference of Gaia astrometric compact-object binaries

arXiv:2609.35999 · astro-ph.SR · Submitted 2026-09-28 · Read on arXiv

astro-ph.SR

Submitted: 2026-09-28

Updated: 2026-09-28

Code: https://github.com/kareemelbadry/gaiamock

Terminology

• Bayesian Inference — 14× in this paper · explained in 5 episodes
• Benchmark — 3× in this paper · explained in 2 episodes
• Robustness — 3× in this paper · explained in 5 episodes
• Metallicity — 2× in this paper · explained in 3 episodes
• Systematic Bias — 2× in this paper · explained in 3 episodes
• Anti-correlation — 1× in this paper · explained in 3 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• European Space Agency — 1× in this paper
• Forward modeling — 1× in this paper · explained in 2 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• Spectroscopic follow-up of compact object binary candidates from Gaia DR3: White dwarfs, neutron stars, black holes, and the parallax zeropoint
• Cosmic Cousins: Identification of a Subpopulation of Binary Black Holes Consistent with Isolated Binary Evolution
• Posterior Predictive Checks for Gravitational-wave Populations: Limitations and Improvements
• Reframing the Wide Eccentric Binary Problem: Eccentricity as a Probe of Mass-transfer Physics
• A global view of post-interaction white dwarf-main sequence binaries
• Population demographics of post-interaction WDMS binaries: From common envelope evolution to stable mass transfer

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