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Unified model for the LISA measurements and instrument simulations

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arxiv 2212.05351 v3 pith:ZMZQJL5L submitted 2022-12-10 gr-qc astro-ph.IM

Jean-Baptiste Bayle , Olaf Hartwig This is my paper · ORCID
classification gr-qcastro-ph.IM
keywords lisadatainstrumentmodelanalysisprocessingchallengesfirst
verification ladder T0 review T1 audit T2 compute T3 formal
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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 simulation of LISA data is a vital part of the development of both the instrument and the analysis methods. The simulation must include a detailed model of the full measurement and analysis chain, capturing the main features that affect the instrument performance and processing algorithms. Here, we propose a new model that includes, for the first time, proper relativistic treatment of reference frames with realistic orbits; a model for onboard clocks and clock synchronization measurements; proper modeling of total laser frequencies, including laser locking, frequency planning and Doppler shifts; better treatment of onboard processing and updated noise models. We then introduce two implementations of this model, LISANode and LISA Instrument. We demonstrate that TDI processing successfully recovers gravitational-wave signals from the significantly more realistic and complex simulated data. LISANode and LISA Instrument are already widely used by the LISA community and, for example, currently provide the mock data for the LISA Data Challenges.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Mitigation of the Flexing-Filtering Effect in Time-Delay Interferometry

    astro-ph.IM 2025-06 conditional novelty 7.0 of 10

    A modified TDI delay operator that folds the anti-aliasing filter response into the delay itself suppresses flexing-filtering noise in LISA simulations, with residuals dropping below the 0.1 pm reference.

  2. Clock-noise subtraction in geometric time-delay interferometry for space-based gravitational-wave parameter estimation

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Generalized clock-noise observables for the four delay/advance link types cancel USO residuals in arbitrary two-path geometric TDI, restoring sensitivity and tightening monochromatic-source parameter constraints.

  3. Science of the LISA mission: A Summary for the European Strategy for Particle Physics

    gr-qc 2025-07 unverdicted novelty 1.0 of 10

    Four LISA science objectives are summarized for the European particle physics strategy, covering gravity tests, standard sirens, and TeV-scale stochastic gravitational wave backgrounds.

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