Analyses of residual accelerations for TianQin based on the global MHD simulation

Su, Weiyi; Wang, Yan; Zhou, Zebing; Bai, Yanzheng; Guo, Yang; Zhou, Chen; Lee, Tom; Wang, Ming; Zhou, Mingyue; Shi, Tong; Yin, Hang; Zhang, Bu-Tian

doi:10.1088/1361-6382/aba181

Cited by 18 publications

(15 citation statements)

References 82 publications

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“…2 (see also Fig. 1 in Su et al (2020)), which requires the global MHD simulations of the Earth magnetosphere. In this work, we adopt the Space Weather Modeling Framework (SWMF) to simulate the interaction between the solar wind and the Earth magnetosphere (Tóth et al 2005).…”

Section: Mhd Simulationmentioning

confidence: 99%

“…The time range of the inputs is from 2008-05-01 00:00 UT to 2008-05-04 24:00 UT with a temporal resolution of 1 min. The input data are the same as Su et al (2020). The ranges of the Geocentric Solar Magnetospheric (GSM) coordinates in the simulation domain are…”

Section: Mhd Simulationmentioning

confidence: 99%

“…In the GSE coordinates, we define the open angle between the Sun-Earth vector and the projection of the normal of the detector plane on the ecliptic plane as φ s , which shows an annual variation from 0 • to 360 • (Su et al 2020) and is equal to 120.5 • at the spring equinox (Hu et al 2018). In order to describe the relative position of the geometric structure of the Earth magnetosphere and the TQ's constellation conveniently, φ s is transformed to its corresponding acute angle ϕ s hereafter.…”

Section: Mhd Simulationmentioning

confidence: 99%

“…The detector's plane formed by three satellites is optimized to detect the continuous GW signals from the candidate ultracompact white-dwarf binary RX J0806.3+1527 (Israel et al 2002). Currently, both science cases (Feng et al 2019;Wang et al 2019;Shi et al 2019;Bao et al 2019;Liu et al 2020;Fan et al 2020;Huang et al 2020) and technological realizations (Luo et al 2020;Ye et al 2019;Tan et al 2020;Yang et al 2020;Su et al 2020;Lu et al 2020) have been under intensive investigations for TQ. A brief summary of TQ's recent progress can be found in Mei et al (2020).…”

Section: Introductionmentioning

confidence: 99%

“…Since the plasma frequency ω p in the space environment is much larger than the electron gyrofrequency, OPD is mainly caused by the total electron content (TEC) along each laser beam. Moreover, the space magnetic field can induce the time variation of the polarization of electromagnetic (EM) waves, and the interaction between the space magnetic field and the test masses can generate additional non-conservative forces on the test masses (Hanson et al 2003;Schumaker 2003;Su et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Analyses of Laser Propagation Noises for TianQin Gravitational Wave Observatory Based on the Global Magnetosphere MHD Simulations

Su,

Wang,

Zhou

et al. 2021

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TianQin is a proposed space-borne gravitational wave (GW) observatory composed of three identical satellites orbiting around the geocenter with a radius of 10 5 km. It aims at detecting GWs in the frequency range of 0.1 mHz -1 Hz. The detection of GW relies on the high precision measurement of optical path length at 10 −12 m level. The dispersion of space plasma can lead to the optical path difference (OPD, ∆l) along the propagation of laser beams between any pair of satellites. Here, we study the OPD noises for TianQin. The Space Weather Modeling Framework is used to simulate the interaction between the Earth magnetosphere and solar wind. From the simulations, we extract the magnetic field and plasma parameters on the orbits of TianQin at four relative positions of the satellite constellation in the Earth magnetosphere. We calculate the OPD noise for single link, Michelson combination, and Time-Delay Interferometry (TDI) combinations (α and X). For single link and Michelson interferometer, the maxima of |∆l| are on the order of 1 pm. For the TDI combinations, these can be suppressed to about 0.004 and 0.008 pm for α and X. The OPD noise of the Michelson combination is colored in the concerned frequency range; while the ones for the TDI combinations are approximately white. Furthermore, we calculate the ratio of the equivalent strain of the OPD noise to that of TQ, and find that the OPD noises for the TDI combinations can be neglected in the most sensitive frequency range of f 0.1 Hz.

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Section: Mhd Simulationmentioning

confidence: 99%

Section: Mhd Simulationmentioning

confidence: 99%