Magnetic-induced force noise in LISA Pathfinder free-falling test masses
LISA Pathfinder was a mission designed to test key technologies required for gravitational wave detection in space. Magnetically driven forces play a key role in the instrument sensitivity in the low-frequency regime, which corresponds to the measurement band of interest for future space-borne gravi...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/430478 |
| Acceso en línea: | https://hdl.handle.net/2117/430478 https://dx.doi.org/10.1103/PhysRevLett.134.071401 |
| Access Level: | acceso abierto |
| Palabra clave: | Gravitational wave detection Gravitational waves Gravitational wave detectors Àrees temàtiques de la UPC::Enginyeria electrònica::Microelectrònica |
| Sumario: | LISA Pathfinder was a mission designed to test key technologies required for gravitational wave detection in space. Magnetically driven forces play a key role in the instrument sensitivity in the low-frequency regime, which corresponds to the measurement band of interest for future space-borne gravitational wave observatories. Magnetically induced forces couple to the test mass motion, introducing a contribution to the relative acceleration noise between the free-falling test masses. In this Letter we present the first complete estimate of this term of the instrument performance model. Our results set the magnetic-induced acceleration noise during the February 2017 noise run of 0.25+0.15 -0.08¿¿fm¿s-2/vHz at 1 mHz and 1.01+0.73 -0.24¿¿fm¿s-2/vHz at 0.1 mHz. We also discuss how the nonstationarities of the interplanetary magnetic field can affect these values during extreme space weather conditions. |
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