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In this work, we study the prospect of detecting the stochastic gravitational-wave background with the TianQin Observatory. We consider sources of both astrophysical-origin and cosmological-origin, including stellar-mass binary black holes,…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-01 Zheng-Cheng Liang , Yi-Ming Hu , Yun Jiang , Jun Cheng , Jian-dong Zhang , Jianwei Mei

The Laser Interferometer Space Antenna (LISA) is a future space-based gravitational wave (GW) detector designed to be sensitive to sources radiating in the low frequency regime (0.1 mHz to 1 Hz). LISA's interferometer signals will be…

Instrumentation and Methods for Astrophysics · Physics 2022-05-25 Sourath Ghosh , Josep Sanjuan , Guido Mueller

Gravitational waves (GWs) from the galactic double white dwarf (DWD) systems are one of the primary targets for upcoming space-based detectors. Due to their vast abundance and widespread distribution throughout the Galactic disk and bulge,…

Astrophysics of Galaxies · Physics 2026-04-16 Yan Sun , Yong Yuan , Minghui Du , Wen-Fan Feng , Xilong Fan , Peng Xu

The Laser Interferometer Space Antenna is a foreseen gravitational wave detector, which aims to detect $10^{-20}$ strains in the frequency range from 0.1 mHz to 1 Hz. It is a triangular constellation, with equal sides of $2,5 \times 10^9$…

Instrumentation and Methods for Astrophysics · Physics 2020-07-01 C P Sasso , G Mana , S Mottini

Direct observations of gravitational waves at frequencies below 10 Hz will play crucial roles for fully exploiting the potential of gravitational wave astronomy. One approach to pursue this direction is the utilization of laser…

Instrumentation and Methods for Astrophysics · Physics 2024-04-03 Kiwamu Izumi , Masa-Katsu Fujimoto

Galactic double white dwarfs are predominant sources of gravitational waves in the millihertz frequencies accessible to space-borne gravitational wave detectors. With advances in multi-messenger astronomy, an increasing number of double…

Solar and Stellar Astrophysics · Physics 2024-12-06 Hong-Ming Jin , Bo Ma , Yong Shao , Yan Wang

In future geocentric space-based gravitational-wave observatory missions, eclipses due to passing through the Moon's and Earth's shadows can negatively impact the sciencecraft's thermal stability and steady power supply. The occurrence…

General Relativity and Quantum Cosmology · Physics 2021-02-17 Bobing Ye , Xuefeng Zhang , Yanwei Ding , Yunhe Meng

A major challenge for gravitational-wave (GW) detection in the $\mu$Hz band is engineering a test mass (TM) with sufficiently low acceleration noise. We propose a GW detection concept using asteroids located in the inner Solar System as…

General Relativity and Quantum Cosmology · Physics 2022-05-19 Michael A. Fedderke , Peter W. Graham , Surjeet Rajendran

Gravitational wave (GW) detection in space is aimed at low frequency band (100 nHz - 100 mHz) and middle frequency band (100 mHz - 10 Hz). The science goals are the detection of GWs from (i) Supermassive Black Holes; (ii) Extreme-Mass-Ratio…

Instrumentation and Methods for Astrophysics · Physics 2016-12-06 Wei-Tou Ni

We estimate the sensitivity to nano-Hertz gravitational waves of pulsar timing experiments in which two highly-stable millisecond pulsars are tracked simultaneously with two neighboring radio telescopes that are referenced to the same…

General Relativity and Quantum Cosmology · Physics 2011-05-23 Massimo Tinto

An accurate measurement of the bunching of photons in the fluorescent emission from an ultracold ensemble of thermal 87Rb atoms in a steady-state magneto-optical trap is presented. Time-delayed-intensity-interferometry (TDII) performed with…

Atomic Physics · Physics 2015-02-24 Muhammed Shafi K. , Deepak Pandey , Buti Suryabrahmam , B. S. Girish , Hema Ramachandran

LISA is an array of three spacecraft in an approximately equilateral triangle configuration which will be used as a low-frequency gravitational wave detector. We present here new generalizations of the Michelson- and Sagnac-type time-delay…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Daniel A. Shaddock , Massimo Tinto , Frank B. Estabrook , J. W. Armstrong

The Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite has been making observations of the mesosphere and lower thermosphere (MLT) region for two decades. The TIMED Doppler Interferometer (TIDI) measures the…

Space Physics · Physics 2023-03-15 Chen Wu , Aaron J. Ridley

While general relativity predicts only two tensor modes for gravitational wave polarization, general metric theories of gravity allows up to four additional modes, including two vector and two scalar modes. Observing the polarization modes…

General Relativity and Quantum Cosmology · Physics 2023-03-07 Yu Hu , Pan-Pan Wang , Yu-Jie Tan , Cheng-Gang Shao

One of the atom interferometer gravitational wave missions proposed by Dimopoulos et al.1 in 2008 was called AGIS-Sat. 2. It had a suggested gravitational wave sensitivity set by the atom state detection shot noise level that started at 1…

Instrumentation and Methods for Astrophysics · Physics 2015-05-28 Peter L. Bender

We propose a space-based gravitational wave detector consisting of two spatially separated, drag-free satellites sharing ultra-stable optical laser light over a single baseline. Each satellite contains an optical lattice atomic clock, which…

TianQin is a proposed space-based gravitational-wave observatory mission that critically relies on the stability of an equilateral-triangle constellation. Comprising three satellites in high Earth orbits of a $ 10^5 $ km radius, this…

General Relativity and Quantum Cosmology · Physics 2024-04-30 Bobing Ye , Xuefeng Zhang

TianQin is a dedicated geocentric mission for space-based gravitational wave (GW) detection. Among its core technologies, the drag-free and pointing control subsystem (DFPCS) - consisting of suspension, drag-free and pointing controls -…

General Relativity and Quantum Cosmology · Physics 2025-11-14 Yuzhou Fang , Xuefeng Zhang , Hongyin Li

We present the science case for surveys with the Tianlai dish array interferometer tuned to the $\left[ 1300, 1400 \right] \mathrm{MHz}$ frequency range. Starting from a realistic generation of mock visibility data according to the survey…

For space gravitational wave (GW) detection, arm locking is a proposal useful in decreasing the frequency noise of the laser sources for current developing space missions LISA and Taiji/TianQin. In this paper, we study the application of…

Instrumentation and Methods for Astrophysics · Physics 2024-10-02 Jun Nian , Wei-Tou Ni