Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published June 15, 2021 | Published + Accepted Version
Journal Article Open

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


Cosmic Explorer 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 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.

Additional Information

© 2021 American Physical Society. (Received 24 January 2021; accepted 13 May 2021; published 21 June 2021) The authors gratefully acknowledge the support of the National Science Foundation through collaborative Grants No. 1836814, No. 1836809, No. 1836734, and No. 1836702. E. D. H. is supported by the MathWorks, Inc. J. R. S. is partially supported by the Dan Black Family Trust. Y. B. is supported by the Sherman Fairchild Fellowship and by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award No. DE-SC0011632. B. K. is supported by the Heising-Simons Foundation. B. J. J. S. is supported through Australian Research Council (ARC) Centre of Excellence CE170100004.

Attached Files

Published - PhysRevD.103.122004.pdf

Accepted Version - 2012.03608.pdf


Files (5.2 MB)
Name Size Download all
3.4 MB Preview Download
1.9 MB Preview Download

Additional details

August 20, 2023
October 23, 2023