LISA and LISA PathFinder, the endeavour to detect low frequency GWs
Henrique Araujo, Cesar Boatella, Mokhtar Chmeissani, Aleix Conchillo,, Enrique Garcia-Berro, Catia Grimani, Wojtek Hajdas, Alberto Lobo, Lluis, Martinez, Miquel Nofrarias, Jose Antonio Ortega, Carles Puigdengoles, Juan, Ramos-Castro, Josep Sanjuan, Peter Wass, Xevi Xirgu
TL;DR
This review discusses the technological challenges and solutions for detecting low-frequency gravitational waves with LISA, highlighting the role of LISA PathFinder in testing key technologies before full deployment.
Contribution
It provides a comprehensive overview of the conceptual problems, technological solutions, and the testing approach through LISA PathFinder for the LISA mission.
Findings
LISA requires advanced interferometric technology for low-frequency GW detection.
LISA PathFinder tests critical technologies needed for LISA.
Technological development is ongoing to address conceptual challenges.
Abstract
This is a review about LISA and its technology demonstrator, LISA PathFinder. We first describe the conceptual problems which need to be overcome in order to set up a working interferometric detector of low frequency Gravitational Waves (GW), then summarise the solutions to them as currently conceived by the LISA mission team. This will show that some of these solutions require new technological abilities which are still under development, and which need proper test before being fully implemented. LISA PathFinder (LPF) is the the testbed for such technologies. The final part of the paper will address the ideas and concepts behind the PathFinder as well as their impact on LISA.
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