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Detection and characterization of instrumental transients in LISA Pathfinder and their projection to LISA

Baghi, Quentin; Korsakova, Natalia; Slutsky, Jacob +3 more

The LISA Pathfinder (LPF) mission succeeded outstandingly in demonstrating key technological aspects of future space-borne gravitational-wave detectors, such as the Laser Interferometer Space Antenna (LISA). Specifically, LPF demonstrated with unprecedented sensitivity the measurement of the relative acceleration of two free-falling cubic test mas…

Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin

Mendes, L.; Russano, G.; Nofrarias, M. +79 more

We present an in depth analysis of the transient events, or glitches, detected at a rate of about one per day in the differential acceleration data of LISA Pathfinder. We show that these glitches fall in two rather distinct categories: fast transients in the interferometric motion readout on one side, and true force transient events on the other. …

Sensor noise in LISA Pathfinder: An extensive in-flight review of the angular and longitudinal interferometric measurement system

Mendes, L.; Russano, G.; Sanjuan, J. +84 more

In a previous article [1], we have reported on the first subpicometer interferometer flown in space as part of ESA's LISA Pathfinder mission, and have shown the residual sensor noise to be on the level of 32.0_-1.7^+2.4 fm /√{Hz } . This review provides a deeper and more complete overview of the full system and its interferomet…

Figures of merit for a stochastic gravitational-wave background measurement by LISA: Implications of LISA Pathfinder noise correlations

Christensen, Nelson; Meyer, Renate; Boileau, Guillaume

An important goal of the Laser Interferometer Space Antenna (LISA) is to observe a stochastic gravitational-wave background (SGWB). A study of possible correlated noise in LISA is relevant to establish limits for this future measurement. To test noise investigation methods under somewhat realistic conditions, we use the data of LISA Pathfinder. We…