SAMOP 2023 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 11: Precision Measurements: Gravity I

Q 11.7: Talk

Monday, March 6, 2023, 18:30–18:45, E214

Toward testing LISA post-processing pipeline under realistic circumstances with experimental data. — •Narjiss Messied — Max-Planck Institut für Gravitationsphysik (Albert-Einstein Institut), Callinstraße 38, 30167 Hannover, Germany

Laser Interferometer Space Antenna (LISA) is a space-based mission that aims to detect gravitational waves in the mHz range with heterodyne interferometry. Gravitational wave signals encoded in a beam phase are extracted by a phasemeter. Raw phase data from this core device is dominated by various noise sources, for example, laser frequency noise, clock noise, etc. Hence, LISA requires the initial noise reduction pipeline (INReP), a set of complex data post-processing algorithms, in order to dig up gravitational wave signals from such noise-dominant data. Any research on this pipeline has relied on synthetic data produced by numerical LISA simulators so far, which can not cover all realistic features of actual phasemeter outputs during the mission. In this talk, we present the latest efforts toward the verification of this pipeline with experimental data from our on-ground testbed called the Hexagon, which acts as a miniature-scale LISA with three beam sources and three independent phasemeters.