77 citations · 584 across the 25 of their papers we have counts for
25 papers
Impact of Spacecraft Orbit Uncertainties and Velocity Mismodeling on the LISA Gravitational-Wave Response
Lorenzo Speri, Olaf Hartwig, Waldemar Martens +5
The Laser Interferometer Space Antenna (LISA) is a space-based gravitational wave observatory that consists of three spacecraft in a near-equilateral triangular formation. The spac…
LISA science ground segment conventions
Quentin Baghi, Stanislas Babak, Leor Barack +22
This document sets out the conventions used for data simulations, waveforms, and analysis pipelines within the Distributed Data Processing Centre (DDPC) of the Laser Interferometer…
Searching systematically for coupling of laser and phase-modulation noise in heterodyne interferometry
Kohei Yamamoto, Olaf Hartwig, Lennart Wissel +3
Heterodyne interferometry for precision science often comes with an optical phase modulation, for example, for intersatellite clock noise transfer for gravitational wave (GW) detec…
Applying TDI to Hardware-Simulated Data
Reid Ferguson, Olaf Hartwig, Guido Mueller
Many years of development have gone into producing instruments that meet the required noise performance of the LISA interferometric detection system. Concurrently, software simulat…
Observable-based reformulation of time-delay interferometry
Kohei Yamamoto, Jan Niklas Reinhardt, Olaf Hartwig
Spaceborne gravitational-wave observatories utilize a postprocessing technique known as time-delay interferometry (TDI) to reduce the otherwise overwhelming laser frequency noise b…
Optimal design of interpolation methods for time-delay interferometry
Martin Staab, Jean-Baptiste Bayle, Olaf Hartwig +4
Time-delay interferometry (TDI) suppresses laser frequency noise by forming linear combinations of time-shifted interferometric measurements. The time-shift operation is implemente…
Clock synchronization and light-travel-time estimation for space-based gravitational-wave detectors
Jan Niklas Reinhardt, Olaf Hartwig, Gerhard Heinzel
Space-based gravitational-wave detectors, such as LISA, record interferometric measurements on widely separated satellites. Their clocks are not synced actively. Instead, clock syn…
Experimental end-to-end demonstration of intersatellite absolute ranging for LISA
Kohei Yamamoto, Iouri Bykov, Jan Niklas Reinhardt +10
The Laser Interferometer Space Antenna (LISA) is a gravitational wave detector in space. It relies on a post-processing technique named time-delay interferometry (TDI) to suppress…
Time-delay interferometry with onboard optical delays
Jan Niklas Reinhardt, Philipp Euringer, Olaf Hartwig +3
Time-delay interferometry (TDI) is a data processing technique for space-based gravitational-wave detectors to create laser-noise-free equal-optical-path-length interferometers vir…
LISA Definition Study Report
Monica Colpi, Karsten Danzmann, Martin Hewitson +108
The Laser Interferometer Space Antenna (LISA) is the first scientific endeavour to detect and study gravitational waves from space. LISA will survey the sky for Gravitational Waves…
Ranging Sensor Fusion in LISA Data Processing: Treatment of Ambiguities, Noise, and On-Board Delays in LISA Ranging Observables
Jan Niklas Reinhardt, Martin Staab, Kohei Yamamoto +6
Interspacecraft ranging is crucial for the suppression of laser frequency noise via time-delay interferometry (TDI). So far, the effects of on-board delays and ambiguities on the L…
Laser noise residuals in LISA from onboard processing and time-delay interferometry
Martin Staab, Marc Lilley, Jean-Baptiste Bayle +1
Time-delay interferometry (TDI) is a crucial step in the on-ground data processing pipeline of the Laser Interferometer Space Antenna (LISA), as it reduces otherwise overwhelming l…
End-to-end simulation and analysis pipeline for LISA
Jean-Baptiste Bayle, Olaf Hartwig, Marc Lilley +4
The data produced by the future space-based millihertz gravitational-wave detector LISA will require nontrivial pre-processing, which might affect the science results. It is crucia…
Stochastic gravitational wave background reconstruction for a non-equilateral and unequal-noise LISA constellation
Olaf Hartwig, Marc Lilley, Martina Muratore +1
We explore the impact of choosing different sets of Time-Delay Interferometry (TDI) variables for detecting and reconstructing Stochastic Gravitational Wave Background (SGWB) signa…
The influence of laser relative intensity noise in the Laser Interferometer Space Antenna
Lennart Wissel, Olaf Hartwig, Jean-Baptiste Bayle +4
LISA is an upcoming ESA mission that will detect gravitational waves in space by interferometrically measuring the separation between free-falling test masses at picometer precisio…
Unified model for the LISA measurements and instrument simulations
Jean-Baptiste Bayle, Olaf Hartwig
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…
TDI noises transfer functions for LISA
Dam Quang Nam, Yves Lemiere, Antoine Petiteau +4
The LISA mission is the future space-based gravitational wave (GW) observatory of the European Space Agency. It is formed by 3 spacecraft exchanging laser beams in order to form mu…
On the effectiveness of null TDI channels as instrument noise monitors in LISA
Martina Muratore, Olaf Hartwig, Daniele Vetrugno +2
We present a study of the use and limits of the Time-Delay Interferometry null channels for in flight estimation of the Laser Interferometer Space Antenna instrumental noise. The p…
Time delay interferometry without clock synchronisation
Olaf Hartwig, Jean-Baptiste Bayle, Martin Staab +3
Time-delay interferometry (TDI) is a data processing technique for LISA designed to suppress the otherwise overwhelming laser noise by several orders of magnitude. It is widely bel…
Experimental verification of intersatellite clock synchronization at LISA performance levels
Kohei Yamamoto, Christoph Vorndamme, Olaf Hartwig +3
The Laser Interferometer Space Antenna (LISA) aims to observe gravitational waves in the mHz regime over its 10-year mission time. LISA will operate laser interferometers between t…
Characterization of Time Delay Interferometry combinations for the LISA instrument noise
Olaf Hartwig, Martina Muratore
Time delay interferometry (TDI) is a post-processing technique used in the Laser Interferometer Space Antenna (LISA) to reduce laser frequency noise by building an equal-arm interf…
Time Delay Interferometry combinations as instrument noise monitors for LISA
Martina Muratore, Daniele Vetrugno, Stefano Vitale +1
The LISA mission will likely be a signal dominated detector, such that one challenge is the separation of the different astrophysical sources, and to distinguish between them and t…
Adapting time-delay interferometry for LISA data in frequency
Jean-Baptiste Bayle, Olaf Hartwig, Martin Staab
Time-delay interferometry (TDI) is a post-processing technique used to reduce laser noise in heterodyne interferometric measurements with unequal armlengths, a situation characteri…
Clock-jitter reduction in LISA time-delay interferometry combinations
Olaf Hartwig, Jean-Baptiste Bayle
The Laser Interferometer Space Antenna (LISA) is a European Space Agency mission that aims to measure gravitational waves in the millihertz range. The three-spacecraft constellatio…