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Science-driven Tunable Design of Cosmic Explorer Detectors

Srivastava, Varun and Davis, Derek and Kuns, Kevin and Landry, Philippe and Ballmer, Stefan and Evans, Matthew and Hall, Evan D. and Read, Jocelyn and Sathyaprakash, B. S. (2022) Science-driven Tunable Design of Cosmic Explorer Detectors. Astrophysical Journal, 931 (1). Art. No. 22. ISSN 0004-637X. doi:10.3847/1538-4357/ac5f04.

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Ground-based gravitational-wave detectors like Cosmic Explorer (CE) can be tuned to improve their sensitivity at high or low frequencies by tuning the response of the signal extraction cavity. Enhanced sensitivity above 2 kHz enables measurements of the post-merger gravitational-wave spectrum from binary neutron star mergers, which depends critically on the unknown equation of state of hot, ultra-dense matter. Improved sensitivity below 500 Hz favors precision tests of extreme gravity with black hole ringdown signals and improves the detection prospects while facilitating an improved measurement of source properties for compact binary inspirals at cosmological distances. At intermediate frequencies, a more sensitive detector can better measure the tidal properties of neutron stars. We present and characterize the performance of tuned CE configurations that are designed to optimize detections across different astrophysical source populations. These tuning options give CE the flexibility to target a diverse set of science goals with the same detector infrastructure. We find that a 40 km CE detector outperforms a 20 km in all key science goals other than access to post-merger physics. This suggests that CE should include at least one 40 km facility.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Srivastava, Varun0000-0002-4296-5463
Davis, Derek0000-0001-5620-6751
Kuns, Kevin0000-0003-0630-3902
Landry, Philippe0000-0002-8457-1964
Ballmer, Stefan0000-0003-2306-523X
Evans, Matthew0000-0001-8459-4499
Hall, Evan D.0000-0001-9018-666X
Read, Jocelyn0000-0003-3845-7586
Sathyaprakash, B. S.0000-0003-3845-7586
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2022 January 25; revised 2022 March 10; accepted 2022 March 16; published 2022 May 19. The authors would like to thank Reed Essick and Daniel Brown for a careful review of the manuscript. V.S. and S.B. thank the National Science Foundation for support through award PHY-1836702 and PHY-1912536. D.D. is supported by the National Science Foundation as part of the LIGO Laboratory, which operates under cooperative agreement PHY-1764464. K.K. and M.E. thank the National Science Foundation for support through award PHY-1836814. P.L. is supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). E.D.H. is supported by the MathWorks, Inc. J.R. thanks the National Science Foundation for support through awards PHY-1806962 and PHY-2110441. B.S.S. thanks the National Science Foundation for support through awards PHY-2012083, PHY-1836779, and AST-2006384.
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Subject Keywords:Gravitational wave astronomy; Gravitational wave detectors; Gravitational waves; General relativity; Particle astrophysics
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Gravitational wave astronomy (675); Gravitational wave detectors (676); Gravitational waves (678); General relativity (641); Particle astrophysics (96)
Record Number:CaltechAUTHORS:20220608-849328000
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Official Citation:Varun Srivastava et al 2022 ApJ 931 22
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115077
Deposited By: George Porter
Deposited On:14 Jun 2022 14:30
Last Modified:14 Jun 2022 14:30

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