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Gravitational-wave physics with Cosmic Explorer: limits to low-frequency sensitivity

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arxiv 2012.03608 v3 pith:SGYRFE7Q submitted 2020-12-07 gr-qc astro-ph.IM

Gravitational-wave physics with Cosmic Explorer: limits to low-frequency sensitivity

classification gr-qc astro-ph.IM
keywords cosmicexploreranalysisconceptdesigngravitational-waveimprovednoises
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Cosmic Explorer (CE) is a next-generation ground-based gravitational-wave observatory concept, envisioned to begin operation in the 2030s, and expected to be capable of observing binary neutron star and black hole mergers back to the time of the first stars. Cosmic Explorer's sensitive band will extend below 10 Hz, where the design is predominantly limited by geophysical, thermal, and quantum noises. In this work, thermal, seismic, gravity-gradient, quantum, residual gas, scattered-light, and servo-control noises are analyzed in order to motivate facility and vacuum system design requirements, potential test mass suspensions, Newtonian noise reduction strategies, improved inertial sensors, and cryogenic control requirements. Our analysis shows that with improved technologies, Cosmic Explorer can deliver a strain sensitivity better than $10^{-23}/\mathrm{Hz}^{1/2}$ down to 5 Hz. Our work refines and extends previous analysis of the Cosmic Explorer concept and outlines the key research areas needed to make this observatory a reality.

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Cited by 5 Pith papers

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