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Low-frequency gravitational wave detection via double optical clocks in space


Su, Jianfeng; Wang, Qiang; Wang, Qinghua; Jetzer, Philippe (2018). Low-frequency gravitational wave detection via double optical clocks in space. Classical and Quantum Gravity, 35(8):085010.

Abstract

We propose a Doppler tracking system for gravitational wave detection via double optical clocks in space (DOCS). In this configuration two spacecrafts (each containing an optical clock) are launched to space for Doppler shift observations. Compared to the similar attempt of gravitational wave detection in the Cassini mission, the radio signal of DOCS that contains the relative frequency changes avoids completely noise effects due for instance to troposphere, ionosphere, ground-based antenna and transponder. Given the high stabilities of the two optical clocks (Allan deviation  ~$ 4.1\times 10^{-17}$ @ 1000 s), an overall estimated sensitivity of $5 \times 10^{-19}$ could be achieved with an observation time of 2 yr, and would allow to detect gravitational waves in the frequency range from  ~10−4 Hz to  ~10−2 Hz.

Abstract

We propose a Doppler tracking system for gravitational wave detection via double optical clocks in space (DOCS). In this configuration two spacecrafts (each containing an optical clock) are launched to space for Doppler shift observations. Compared to the similar attempt of gravitational wave detection in the Cassini mission, the radio signal of DOCS that contains the relative frequency changes avoids completely noise effects due for instance to troposphere, ionosphere, ground-based antenna and transponder. Given the high stabilities of the two optical clocks (Allan deviation  ~$ 4.1\times 10^{-17}$ @ 1000 s), an overall estimated sensitivity of $5 \times 10^{-19}$ could be achieved with an observation time of 2 yr, and would allow to detect gravitational waves in the frequency range from  ~10−4 Hz to  ~10−2 Hz.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Physics and Astronomy (miscellaneous)
Language:English
Date:26 April 2018
Deposited On:16 Jan 2019 16:20
Last Modified:29 Jul 2020 08:57
Publisher:IOP Publishing
ISSN:0264-9381
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1088/1361-6382/aab2eb

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