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Accurate and efficient modeling of the Laser Interferometer Space Antenna (LISA) response is crucial for gravitational-wave (GW) data analysis. A key computational challenge lies in evaluating time-delay interferometry (TDI) variables,…

General Relativity and Quantum Cosmology · Physics 2025-08-15 Jorge Valencia , Sascha Husa

For the first time, we have introduced the Tetrahedron Constellation of Gravitational Wave Observatory (TEGO) composed of four identical spacecrafts (S/Cs). The laser telescopes and their pointing structures are mounted on the S/C platform…

General Relativity and Quantum Cosmology · Physics 2024-09-27 Hong-Bo Jin , Cong-Feng Qiao

The GRACE Follow-On satellites carry the very first inter-spacecraft Laser Ranging Interferometer (LRI). After more than four years in orbit, the LRI outperforms the sensitivity of the conventional Microwave Instrument (MWI). However, in…

Instrumentation and Methods for Astrophysics · Physics 2023-01-24 Malte Misfeldt , Vitali Müller , Laura Müller , Henry Wegener , Gerhard Heinzel

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

LISA is a proposed space-based laser interferometer detecting gravitational waves by measuring distances between free-floating test masses housed in three satellites in a triangular constellation with laser links in-between. Each satellite…

Time Interference Alignment is a flavor of Interference Alignment that increases the network capacity by suitably staggering the transmission delays of the senders. In this work the analysis of the existing literature is generalized and the…

Information Theory · Computer Science 2016-11-15 Francisco Lazaro Blasco , Francesco Rossetto , Gerhard Bauch

We demonstrated a simple technique for monitoring range variation with millimeter-precision between two remote sites using off-the-shelf wireless communication modules. The need for the flexible positioning of wireless devices is…

Signal Processing · Electrical Eng. & Systems 2018-10-31 Bhola R. Panta , Kohta Kido , Satoshi Yasuda , Yuko Hanado , Seiji Kawamura , Hiroshi Hanado , Kenichi Takizawa , Masugi Inoue , Nobuyasu Shiga

This paper contributes to the field of modeling and hindcasting of the total solar irradiance (TSI) based on different proxy data that extend further back in time than the TSI that is measured from satellites. We introduce a simple method…

Solar and Stellar Astrophysics · Physics 2017-03-22 Jaan Pelt , Maarit Käpylä , Nigul Olspert

This paper presents a novel method for laser frequency stabilisation in the Laser Interferometer Space Antenna (LISA) mission by locking a laser to two stable length references - the arms of the interferometer and an on-board optical…

General Relativity and Quantum Cosmology · Physics 2022-04-06 Jobin Thomas Valliyakalayil , Andrew J. H. Sutton , Robert E. Spero , Daniel A. Shaddock , Kirk McKenzie

Interferometry, as the key technique in modern precision measurements, has been used for length diagnosis in the fields of engineering metrology and astronomy. Analogous interferometric technique for time domain precision measurement is a…

Optics · Physics 2019-11-15 Zhen Yang , Wei Cao , Yunlong Mo , Huiyao Xu , Kang Mi , Pengfei Lan , Qingbin Zhang , Peixiang Lu

Spacetime fluctuations (SFs), a common feature of different proposed gravity models, could be detected using laser interferometers. In the search for SFs, a correspondence between the expected output signals and different gravity models is…

General Relativity and Quantum Cosmology · Physics 2026-03-03 B. Sharmila , Sander M. Vermeulen , Animesh Datta

Space gravitational wave detectors employing laser interferometry between free-flying spacecraft differ in many ways from their laboratory counterparts. Among these differences is the fact that, in space, the end-masses will be moving…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Ronald W. Hellings

I suggest that measurements of intensity fluctuations caused by classical wave interactions can be used to find unresolved gravitational lenses and determine time delays of essentially arbitrary length among the images formed by a…

Astrophysics · Physics 2015-06-24 Ermanno F. Borra

Tracking moving masses in several degrees of freedom with high precision and large dynamic range is a central aspect in many current and future gravitational physics experiments. Laser interferometers have been established as one of the…

The planned Laser Interferometer Space Antenna (LISA) will detect gravitational wave signals from a wide range of sources. However, disentangling individual signals from the source-dominated data stream is a challenging problem and the…

General Relativity and Quantum Cosmology · Physics 2016-11-15 Jonathan R Gair , Gareth Jones

We present first-order models for tilt-to-length (TTL) coupling in LISA, both for the individual interferometers as well as in the time-delay interferometry (TDI) Michelson observables. These models include the noise contributions from…

Instrumentation and Methods for Astrophysics · Physics 2024-06-07 Gudrun Wanner , Sweta Shah , Martin Staab , Henry Wegener , Sarah Paczkowski

A new time-delay estimation (TDE) technique based on dynamic programming is developed, to measures the time-varying time-delay between two signals. Dynamic programming based TDE technique provides a frequency response 5 to 10 times higher…

Plasma Physics · Physics 2010-01-11 Deepak K. Gupta , George R. McKee , Raymond R. Fonck

The drag-free satellites of LISA will maintain the test masses in geodesic motion over many years with residual accelerations at unprecedented small levels and time delay interferometry (TDI) will keep track of their differential positions…

General Relativity and Quantum Cosmology · Physics 2014-11-18 M. Cerdonio , R. De Pietri , Ph. Jetzer , M. Sereno

TianQin is a proposal for a space-borne detector of gravitational waves in the millihertz frequencies. The experiment relies on a constellation of three drag-free spacecraft orbiting the Earth. Inter-spacecraft laser interferometry is used…

The Laser Interferometer Space Antenna (LISA) will open a rich discovery space in the milli-Hertz gravitational wave band. In addition to the anticipated signals from many millions of binary systems, this band may contain new and previously…

General Relativity and Quantum Cosmology · Physics 2019-01-16 Travis Robson , Neil J. Cornish