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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…

Solar and Stellar Astrophysics · Physics 2021-06-30 Wei Su , Yan Wang , Chen Zhou , Lingfeng Lu , Ze-Bing Zhou , T. Li , Tong Shi , Xin-Chun Hu , Ming-Yue Zhou , Ming Wang , Hsien-Chi Yeh , Han Wang , P. F. Chen

We present a data analysis methodology for a model-independent reconstruction of the spectral shape of a stochastic gravitational wave background with LISA. We improve a previously proposed reconstruction algorithm that relied on a single…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-17 Raphael Flauger , Nikolaos Karnesis , Germano Nardini , Mauro Pieroni , Angelo Ricciardone , Jesús Torrado

In this paper, we describe a hybrid-extended Kalman filter algorithm to synchronize the clocks and to precisely determine the inter-spacecraft distances for space-based gravitational wave detectors, such as (e)LISA. According to the…

General Relativity and Quantum Cosmology · Physics 2014-09-17 Yan Wang , Gerhard Heinzel , Karsten Danzmann

We apply TDI, unfolding the general triangular configuration, to the special case of a linear array of three spacecraft. We show that such an array ("SyZyGy") has, compared with an equilateral triangle GW detector of the same scale,…

General Relativity and Quantum Cosmology · Physics 2009-11-10 F. B. Estabrook , J. W. Armstrong , Massimo Tinto , William Folkner

Precision phase readout of optical beat note signals is one of the core techniques required for intersatellite laser interferometry. Future space based gravitational wave detectors like eLISA require such a readout over a wide range of MHz…

The Laser Ranging Interferometer (LRI) instrument on the Gravity Recovery and Climate Experiment (GRACE) Follow-On mission has provided the first laser interferometric range measurements between remote spacecraft, separated by approximately…

Instrumentation and Methods for Astrophysics · Physics 2019-07-23 Klaus Abich , Claus Braxmaier , Martin Gohlke , Josep Sanjuan , Alexander Abramovici , Brian Bachman Okihiro , David C. Barr , Maxime P. Bize , Michael J. Burke , Ken C. Clark , Glenn de Vine , Jeffrey A. Dickson , Serge Dubovitsky , William M. Folkner , Samuel Francis , Martin S. Gilbert , Mark Katsumura , William Klipstein , Kameron Larsen , Carl Christian Liebe , Jehhal Liu , Kirk McKenzie , Phillip R. Morton , Alexander T. Murray , Don J. Nguyen , Joshua A. Ravich , Daniel Shaddock , Robert Spero , Gary Spiers , Andrew Sutton , Joseph Trinh , Duo Wang , Rabi T. Wang , Brent Ware , Christopher Woodruff , Bengie Amparan , Mike A. Davis , James Howell , Micah Kruger , Lynette Lobmeyer , Robert Pierce , Gretchen Reavis , Michael Sileo , Michelle Stephens , Andreas Baatzsch , Christian Dahl , Katrin Dahl , Frank Gilles , Philipp Hager , Mark Herding , Marina Kaufer , Kolja Nicklaus , Kai Voss , Christina Bogan , Karsten Danzmann , Germán Fernández Barranco , Gerhard Heinzel , Alexander Koch , Christoph Mahrdt , Malte Misfeldt , Vitali Müller , Jens Reiche , Daniel Schütze , Benjamin Sheard , Gunnar Stede , Henry Wegener , Andreas Eckardt , Burghardt Guenther , Thomas Mangoldt , Bernd Zender , Thomas Ester , Frank Heine , Christoph Seiter , Steve Windisch , Reinhold Flatscher , Frank Flechtner , Nicolas Grossard , Jerome Hauden , Martin Hinz , Thomas Leikert , Marcus Zimmermann , Anton Lebeda , Arnold Lebeda

The current planned space-based gravitational-wave detectors require a bidirectional optical connection, referred to as Backlink, between two adjacent optical benches to provide a mutual phase reference for the local interferometric…

This paper is the third part of a trilogy dealing with the principles, performance and limitations of what I named "Telescope-Interferometers" (TIs). The basic idea consists in transforming one telescope into a Wavefront Error (WFE) sensing…

Optics · Physics 2011-05-17 Francois Henault

Laser frequency stabilization is notably one of the major challenges on the way to a space-borne gravitational wave observatory. The proposed Laser Interferometer Space Antenna (LISA) is presently under development in an ESA, NASA…

General Relativity and Quantum Cosmology · Physics 2015-06-25 Markus Herz

Objects sensed by laser interferometers are usually not stable in position or orientation. This angular instability can lead to a coupling of angular tilt to apparent longitudinal displacement -- tilt-to-length coupling (TTL). In LISA this…

Instrumentation and Methods for Astrophysics · Physics 2018-04-24 M Tröbs , S Schuster , M Lieser , M Zwetz , M Chwalla , K Danzmann , G Fernandez Barranco , E D Fitzsimons , O Gerberding , G Heinzel , C J Killow , M Perreur-Lloyd , D I Robertson , T S Schwarze , G Wanner , H Ward

Interferometric gravitational-wave detectors like LIGO need to be able to measure changes in their arm lengths of order $10^{-18}~$m or smaller. This requires very high laser power in order to raise the signal above shot noise. One…

Applied Physics · Physics 2019-12-11 S. Biscans , S. Gras , C. D. Blair , J. Driggers , M. Evans , P. Fritschel , T. Hardwick , G. Mansell

The ongoing development of the space-based laser interferometer missions is aiming at unprecedented gravitational wave detections in the millihertz frequency band. The spaceborne nature of the experimental setups leads to a degree of…

General Relativity and Quantum Cosmology · Physics 2021-10-04 Pan-Pan Wang , Yu-Jie Tan , Wei-Liang Qian , Cheng-Gang Shao

Tilt-to-length (TTL) coupling in the Laser Interferometer Space Antenna (LISA) can generate spurious displacement noise that potentially affects the measurement of gravitational wave signals. In each test mass interferometer, the coupling…

Instrumentation and Methods for Astrophysics · Physics 2025-02-05 Paul Edwards , Megha Dave , Alexander Weaver , Mengyuan Zhao , Paul Fulda , Guido Mueller , Gudrun Wanner

For the LISA mission, Tilt-To-Length (TTL) coupling is expected to be one of the dominant instrumental noise contributions after laser frequency noise is suppressed based, on assumptions on the size of the coupling and angular jitter…

Instrumentation and Methods for Astrophysics · Physics 2026-02-16 Lavinia Heisenberg , Henri Inchauspé , Sarah Paczkowski , Ricardo Waibel

Recent advances at JPL in experimentation and design for LISA interferometry include the demonstration of Time Delay Interferometry using electronically separated end stations, a new arm-locking design with improved gain and stability, and…

Heterodyne interferometry for precision science often comes with an optical phase modulation, for example, for intersatellite clock noise transfer for gravitational wave (GW) detectors in space, exemplified by the Laser Interferometer Space…

Instrumentation and Methods for Astrophysics · Physics 2025-12-22 Kohei Yamamoto , Olaf Hartwig , Lennart Wissel , Holly Leopardi , Kenji Numata , Ryan Derosa

LISA is a space-based mHz gravitational-wave observatory, with a planned launch in 2034. It is expected to be the first detector of its kind, and will present unique challenges in instrumentation and data analysis. An accurate preflight…

General Relativity and Quantum Cosmology · Physics 2023-04-18 Jean-Baptiste Bayle , Olaf Hartwig

The extreme weakness of the gravitational interaction has as one of its consequences that appreciable intensities of gravitational waves (GW) can only be generated in large size astrophysical and cosmological sources. Earth based detectors…

General Relativity and Quantum Cosmology · Physics 2007-05-23 J. Alberto Lobo

Ultralight bosonic fields (ULBFs) are predicted by various theories beyond the standard model of particle physics and are viable candidates of cold dark matter. There have been increasing interests to search for the ULBFs in physical and…

General Relativity and Quantum Cosmology · Physics 2024-10-11 Jiang-Chuan Yu , Yue-Hui Yao , Yong Tang , Yue-Liang Wu

This document briefly describes the noise models and shapes used for the synthesis of the Drag-Free and Attitude Control System in the LISA space mission. LISA (Laser Interferometer Space Antenna) is one of the next large-class missions…

Instrumentation and Methods for Astrophysics · Physics 2024-05-07 Michele Pagone , Carlo Novara