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Magnetic-induced force noise in LISA Pathfinder free-falling test masses

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(LISA Pathfinder Collaboration) M Armano, H Audley, J Baird, P Binetruy, M Born, D Bortoluzzi, E Castelli, A Cavalleri
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A Cesarini, A M Cruise, K Danzmann, M De Deus Silva, I Diepholz, G Dixon, R Dolesi, L Ferraioli, V Ferroni, E D Fitzsimons, M Freschi, L Gesa, D Giardini, F Gibert, R Giusteri, C Grimani, J Grzymisch, I Harrison, M S Hartig, G Heinzel, M Hewitson, D Hollington, D Hoyland, M Hueller, H Inchauspé, O Jennrich, P Jetzer, N Karnesis, B Kaune, N Korsakova, C J Killow, L Liu, J A Lobo, J P López-Zaragoza, R Maarschalkerweerd, D Mance, V Martín, J Martino, L Martin-Polo, F Martin-Porqueras, P W McNamara, J Mendes, L Mendes, N Meshksar, M Nofrarias, S Paczkowski, M Perreur-Lloyd, A Petiteau, P Pivato, E Plagnol, J Ramos-Castro, J Reiche, F Rivas, D I Robertson, G Russano, L Sala, D Serrano, J Slutsky, C F Sopuerta, T Sumner, D Texier, J I Thorpe, D Vetrugno, S Vitale, G Wanner, H Ward, P Wass, W J Weber, L Wissel, A Wittchen, P Zweifel

Instrumentation and Methods for Astrophysics · Submitted 5 Jul 2024

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Our results set the magnetic-induced acceleration noise during the February 2017 noise run of $\rm 0.25_{-0.08}^{+0.15}\,fm\,s^{-2}/\sqrt{Hz}$ at 1 mHz and $\rm 1.01_{-0.24}^{+0.73}\, fm\,s^{-2}/\sqrt{Hz}$ at 0.1 mHz.

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arXiv ID2407.04427 (version 2)
Pith ID2HEAF32C, Pith's permanent record of this paper and its review
CitationA Cavalleri, A Cesarini, A M Cruise, A Petiteau, A Wittchen, B Kaune, C F Sopuerta, C Grimani, C J Killow, D Bortoluzzi, D Giardini, D Hollington, D Hoyland, D I Robertson, D Mance, D Serrano, D Texier, D Vetrugno, E Castelli, E D Fitzsimons, E Plagnol, F Gibert, F Martin-Porqueras, F Rivas, G Dixon, G Heinzel, G Russano, G Wanner, H Audley, H Inchausp\'e, H Ward, I Diepholz, I Harrison, J A Lobo, J Baird, J Grzymisch, J I Thorpe, J Martino, J Mendes, J P L\'opez-Zaragoza, J Ramos-Castro, J Reiche, J Slutsky, K Danzmann, L Ferraioli, L Gesa, (LISA Pathfinder Collaboration) M Armano, L Liu, L Martin-Polo, L Mendes, L Sala, L Wissel, M Born, M de Deus Silva, M Freschi, M Hewitson, M Hueller, M Nofrarias, M Perreur-Lloyd, M S Hartig, N Karnesis, N Korsakova, N Meshksar, O Jennrich, P Binetruy, P Jetzer, P Pivato, P Wass, P W McNamara, P Zweifel, R Dolesi, R Giusteri, R Maarschalkerweerd, S Paczkowski, S Vitale, T Sumner, V Ferroni, V Mart\'in, W J Weber. "Magnetic-induced force noise in LISA Pathfinder free-falling test masses." arXiv:2407.04427 (2024). https://pith.science/paper/2HEAF32C
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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,065 input tokens.

What the abstract itself states, as probabilities: claims first 0.93 · states limitation 0.77 · human participants 0.01 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.09 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; .

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 $\rm 0.25_{-0.08}^{+0.15}\,fm\,s^{-2}/\sqrt{Hz}$ at 1 mHz and $\rm 1.01_{-0.24}^{+0.73}\, fm\,s^{-2}/\sqrt{Hz}$ 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.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 LISA Pathfinder was a mission designed to test key technologies required for gravitational wave detection in space. background 1.00 0.05 0.02 asserted 1.00
s1 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. background 1.00 0.07 0.05 asserted 1.00
s2 Magnetic-induced forces couple to the test mass motion, introducing a contribution to the relative acceleration noise between the free falling test masses. background 1.00 0.09 0.06 asserted 1.00
s3 In this Letter we present the first complete estimate of this term of the instrument performance model. contribution 0.99 0.91 0.11 asserted 0.99
s4 Our results set the magnetic-induced acceleration noise during the February 2017 noise run of $\rm 0.25_{-0.08}^{+0.15}\,fm\,s^{-2}/\sqrt{Hz}$ at 1 mHz and $\rm 1.01_{-0.24}^{+0.73}\, fm\,s^{-2}/\sqrt{Hz}$ at 0.1 mHz. result 1.00 0.97 0.84 asserted 1.00
s5 We also discuss how the non-stationarities of the interplanetary magnetic field can affect these values during extreme space weather conditions. interpretation 0.54 0.48 0.04 hedged possibility 0.73

What kind of paper the classifier reports this is: empirical study 0.93 · evidence from analysis of existing data 0.59.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

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Original 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 $\rm 0.25_{-0.08}^{+0.15}\,fm\,s^{-2}/\sqrt{Hz}$ at 1 mHz and $\rm 1.01_{-0.24}^{+0.73}\, fm\,s^{-2}/\sqrt{Hz}$ 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.

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