The First Round Result from the TianQin-1 Satellite

Abstract

The TianQin-1 satellite (TQ-1), which is the first technology demonstration satellite for the TianQin project, was launched on 20 December 2019. The first round of experiment had been carried out from 21 December 2019 until 1 April 2020. The residual acceleration of the satellite is found to be about $1\times 10^{-10}\mathrm{m}/{\mathrm{s}}^2/{\mathrm{Hz}}^{1/2}$ at $0.1\mathrm{Hz}$ and about $5\times 10^{-11}\mathrm{m}/{\mathrm{s}}^2/{\mathrm{Hz}}^{1/2}$ at $0.05\mathrm{Hz}$, measured by an inertial sensor with a sensitivity of $5\times 10^{-12}\mathrm{m}/{\mathrm{s}}^2/{\mathrm{Hz}}^{1/2}$ at $0.1\mathrm{Hz}$. The micro-Newton thrusters has demonstrated a thrust resolution of $0.1\mu \mathrm{N}$ and a thrust noise of $0.3\mu \mathrm{N}/{\mathrm{Hz}}^{1/2}$ at $0.1\mathrm{Hz}$. The residual noise of the satellite with drag-free control is $3\times 10^{-9}\mathrm{m}/{\mathrm{s}}^2/{\mathrm{Hz}}^{1/2}$ at $0.1\mathrm{Hz}$. The noise level of the optical readout system is about $30\mathrm{pm}/{\mathrm{Hz}}^{1/2}$ at $0.1\mathrm{Hz}$. The temperature stability at temperature monitoring position is controlled to be about $\pm 3\mathrm{mK}$ per orbit, and the mismatch between the center-of-mass of the satellite and that of the test mass is measured with a precision of better than $0.1\mathrm{mm}$.

17 pages, 11 figures

References in corpus (1)

• On orbit performance of the GRACE Follow-On Laser Ranging Interferometer

Cited by in corpus (33)

• The TianQin project: current progress on science and technology
• Concepts and status of Chinese space gravitational wave detection projects
• Electromagnetic Counterparts to Massive Black Hole Mergers
• The Gravitational-Wave Physics II: Progress
• Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics
• Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network
• Constraining the Hubble constant to a precision of about 1% using multi-band dark standard siren detections
• Gravitational Wave Astronomy With TianQin
• Constraining the cosmological parameters using gravitational wave observations of massive black hole binaries and statistical redshift information
• The Taiji-TianQin-LISA network: Precisely measuring the Hubble constant using both bright and dark sirens
• Joint constraints on cosmological parameters using future multi-band gravitational wave standard siren observations
• Mock data study for next-generation ground-based detectors: The performance loss of matched filtering due to correlated confusion noise
• Upgraded waveform model of eccentric binary black hole based on effective-one-body-numerical-relativity for spin-aligned binary black holes
• The energy budget of cosmological first-order phase transitions beyond the bag equation of state
• Primordial black holes and curvature perturbations from false vacuum islands
• Revisiting time delay interferometry for unequal-arm LISA and TAIJI
• Analyses of Laser Propagation Noises for TianQin Gravitational Wave Observatory Based on the Global Magnetosphere MHD Simulations
• Orbital effects on time delay interferometry for TianQin
• Fast resolving Galactic binaries in LISA data and its ability to study the Milky Way
• Benefit of enhanced electrostatic and optical accelerometry for future gravimetry missions
• Observational prospects for phase transitions at LISA: Fisher matrix analysis
• Core Noise Requirements, and GW Sensitivities of AMIGO
• LitePIG: A Lite Parameter Inference system for the Gravitational wave in the millihertz band
• Improving Constraint on ${\Omega }_m$ from SDSS Using Marked Correlation Functions
• Constraining parity and Lorentz violations in gravity with future ground- and space-based gravitational wave detectors
• Ultra-low-frequency gravitational waves from individual supermassive black hole binaries as standard sirens
• Measuring gravitational wave spectrum from electroweak phase transition and Higgs self-couplings
• Cosmological perturbations in the energy-momentum squared gravity theory: constraints from gravitational wave standard sirens and redshift space distortions
• Bayesian analysis of the complex singlet model with phase transition gravitational waves
• Detectability of massive binary black holes with sub-mHz gravitational wave missions
• Inflationary phase transitions in the early Universe: A Bayesian study with space-based gravitational-wave detectors
• Probing Dark Matter's Gravitational Effects Locally with TianQin
• Constraining Lorentz and parity violations in gravity with multiband gravitational wave observations