Distinguishing cosmology, astrophysics and systematics: the Bayesian search for a primordial gravitational-wave background in next-generation observatories

arXiv:2609.15931 · gr-qc, astro-ph.HE · Submitted 2026-09-14 · Read on arXiv

gr-qc, astro-ph.HE

Submitted: 2026-09-14

Updated: 2026-09-14

Comments: 11 pages, 5 figures, 1 table. Comments welcome

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Accuracy — 6× in this paper · explained in 1 episode
• Adam — 5× in this paper · explained in 2 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Phase Transitions — 1× in this paper · explained in 2 episodes
• Signal-to-noise ratio (SNR) — 1× in this paper · explained in 2 episodes

Sources

• Detectability of inflation-produced gravitational waves
• Beyond LISA: Exploring Future Gravitational Wave Missions
• Detecting the Cosmic Gravitational Wave Background with the Big Bang Observer
• Gravitational Wave Experiments and Early Universe Cosmology
• Relic gravitational waves produced after preheating
• Gravitational Wave Production At The End Of Inflation
• Cosmic Explorer: The U.S. Contribution to Gravitational-Wave Astronomy beyond LIGO
• Science Case for the Einstein Telescope
• BBO and the Neutron-Star-Binary Subtraction Problem
• Ultra-high precision cosmology from gravitational waves
• Accessibility of the Gravitational-Wave Background due to Binary Coalescences to Second and Third Generation Gravitational-Wave Detectors
• Digging deeper: Observing primordial gravitational waves below the binary black hole produced stochastic background
• Subtracting compact binary foreground sources to reveal primordial gravitational-wave backgrounds
• Subtracting Compact Binary Foregrounds to Search for Subdominant Gravitational-Wave Backgrounds in Next-Generation Ground-Based Observatories
• Improving the detection sensitivity to primordial stochastic gravitational waves with reduced astrophysical foregrounds
• Subtracting compact binary foregrounds utilizing anisotropic statistic for third-generation gravitational-wave detectors
• Searching for cosmological stochastic backgrounds by notching out resolvable compact binary foregrounds with next-generation gravitational-wave detectors
• Two-Step Procedure to Detect Cosmological Gravitational Wave Backgrounds with Next-Generation Terrestrial Gravitational-Wave Detectors
• Importance of Shot Noise in the Search for an Isotropic Stochastic Gravitational-Wave Background with Next Generation Detectors
• A family of filters to search for frequency dependent gravitational wave stochastic backgrounds

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• Unitary quantum matter-bounce in a universe with a positive cosmological constant
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