Magnetic-induced force noise in LISA Pathfinder free-falling test masses
Abstract
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. Magnetic-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 at 1 mHz and at 0.1 mHz. We also discuss how the non-stationarities of the interplanetary magnetic field can affect these values during extreme space weather conditions.
Keywords
Cite
@article{arxiv.2407.04427,
title = {Magnetic-induced force noise in LISA Pathfinder free-falling test masses},
author = {M Armano and H Audley and J Baird and P Binetruy and M Born and D Bortoluzzi and E Castelli and A Cavalleri and A Cesarini and A M Cruise and K Danzmann and M De Deus Silva and I Diepholz and G Dixon and R Dolesi and L Ferraioli and V Ferroni and E D Fitzsimons and M Freschi and L Gesa and D Giardini and F Gibert and R Giusteri and C Grimani and J Grzymisch and I Harrison and M S Hartig and G Heinzel and M Hewitson and D Hollington and D Hoyland and M Hueller and H Inchauspé and O Jennrich and P Jetzer and N Karnesis and B Kaune and N Korsakova and C J Killow and L Liu and J A Lobo and J P López-Zaragoza and R Maarschalkerweerd and D Mance and V Martín and J Martino and L Martin-Polo and F Martin-Porqueras and P W McNamara and J Mendes and L Mendes and N Meshksar and M Nofrarias and S Paczkowski and M Perreur-Lloyd and A Petiteau and P Pivato and E Plagnol and J Ramos-Castro and J Reiche and F Rivas and D I Robertson and G Russano and L Sala and D Serrano and J Slutsky and C F Sopuerta and T Sumner and D Texier and J I Thorpe and D Vetrugno and S Vitale and G Wanner and H Ward and P Wass and W J Weber and L Wissel and A Wittchen and P Zweifel},
journal= {arXiv preprint arXiv:2407.04427},
year = {2025}
}