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Time delay interferometry with minimal null frequencies

Wang, Gang
2024
  • journal article

Periodico
PHYSICAL REVIEW D
Abstract
Time delay interferometry (TDI) is a key technique employed in gravitational wave (GW) space missions to mitigate laser frequency noise by combining multiple laser links and establishing an equivalent equal arm interferometry. The null frequencies will be introduced in noise spectra and GW response when the periodical signal/noise is canceled in synthesized laser links. These frequencies are characteristic frequencies of a TDI which related to its geometry of combination. In this work, we implement a second-generation TDI configuration referred to as hybrid relay to perform noise suppressions and data analysis, whose characteristic frequencies are only one-quarter that of the fiducial second-generation Michelson observables. We examine the performance of TDI configuration in laser noise cancellation and clock noise suppression and justify its essential capabilities. To assess its robustness for signal extraction, we simulate data containing GW signals from massive black hole binaries and perform parameter inferences with comparisons against the fiducial Michelson TDI configuration. The results demonstrate that the alternative TDI solution could be more robust than Michelson in fulfilling data analysis.
DOI
10.1103/physrevd.110.042005
WOS
WOS:001301034700001
Archivio
https://hdl.handle.net/20.500.11767/144973
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85202479876
https://arxiv.org/abs/2403.01490
https://ricerca.unityfvg.it/handle/20.500.11767/144973
Diritti
closed access
google-scholar
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