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Armano M, Audley H, Auger G, et al. Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results. Phys Rev Lett. 2016;116(23):231101doi: 10.1103/PhysRevLett.116.231101.
Armano, M., Audley, H., Auger, G., Baird, J. T., Bassan, M., Binetruy, P., Born, M., Bortoluzzi, D., Brandt, N., Caleno, M., Carbone, L., Cavalleri, A., Cesarini, A., Ciani, G., Congedo, G., Cruise, A. M., Danzmann, K., de Deus Silva, M., De Rosa, R., Diaz-Aguiló, M., Di Fiore, L., Diepholz, I., Dixon, G., Dolesi, R., Dunbar, N., Ferraioli, L., Ferroni, V., Fichter, W., Fitzsimons, E. D., Flatscher, R., Freschi, M., García Marín, A. F., García Marirrodriga, C., Gerndt, R., Gesa, L., Gibert, F., Giardini, D., Giusteri, R., Guzmán, F., Grado, A., Grimani, C., Grynagier, A., Grzymisch, J., Harrison, I., Heinzel, G., Hewitson, M., Hollington, D., Hoyland, D., Hueller, M., Inchauspé, H., Jennrich, O., Jetzer, P., Johann, U., Johlander, B., Karnesis, N., Kaune, B., Korsakova, N., Killow, C. J., Lobo, J. A., Lloro, I., Liu, L., López-Zaragoza, J. P., Maarschalkerweerd, R., Mance, D., Martín, V., Martin-Polo, L., Martino, J., Martin-Porqueras, F., Madden, S., Mateos, I., McNamara, P. W., Mendes, J., Mendes, L., Monsky, A., Nicolodi, D., Nofrarias, M., Paczkowski, S., Perreur-Lloyd, M., Petiteau, A., Pivato, P., Plagnol, E., Prat, P., Ragnit, U., Raïs, B., Ramos-Castro, J., Reiche, J., Robertson, D. I., Rozemeijer, H., Rivas, F., Russano, G., Sanjuán, J., Sarra, P., Schleicher, A., Shaul, D., Slutsky, J., Sopuerta, C. F., Stanga, R., Steier, F., Sumner, T., Texier, D., Thorpe, J. I., Trenkel, C., Tröbs, M., Tu, H. B., Vetrugno, D., Vitale, S., Wand, V., Wanner, G., Ward, H., Warren, C., Wass, P. J., Wealthy, D., Weber, W. J., Wissel, L., Wittchen, A., Zambotti, A., Zanoni, C., Ziegler, T., & Zweifel, P. (2016). Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results. Physical review letters, 116(23), 231101. https://doi.org/10.1103/PhysRevLett.116.231101
Armano, M, et al. "Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results." Physical review letters vol. 116,23 (2016): 231101. doi: https://doi.org/10.1103/PhysRevLett.116.231101
Armano M, Audley H, Auger G, Baird JT, Bassan M, Binetruy P, Born M, Bortoluzzi D, Brandt N, Caleno M, Carbone L, Cavalleri A, Cesarini A, Ciani G, Congedo G, Cruise AM, Danzmann K, de Deus Silva M, De Rosa R, Diaz-Aguiló M, Di Fiore L, Diepholz I, Dixon G, Dolesi R, Dunbar N, Ferraioli L, Ferroni V, Fichter W, Fitzsimons ED, Flatscher R, Freschi M, García Marín AF, García Marirrodriga C, Gerndt R, Gesa L, Gibert F, Giardini D, Giusteri R, Guzmán F, Grado A, Grimani C, Grynagier A, Grzymisch J, Harrison I, Heinzel G, Hewitson M, Hollington D, Hoyland D, Hueller M, Inchauspé H, Jennrich O, Jetzer P, Johann U, Johlander B, Karnesis N, Kaune B, Korsakova N, Killow CJ, Lobo JA, Lloro I, Liu L, López-Zaragoza JP, Maarschalkerweerd R, Mance D, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Madden S, Mateos I, McNamara PW, Mendes J, Mendes L, Monsky A, Nicolodi D, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Prat P, Ragnit U, Raïs B, Ramos-Castro J, Reiche J, Robertson DI, Rozemeijer H, Rivas F, Russano G, Sanjuán J, Sarra P, Schleicher A, Shaul D, Slutsky J, Sopuerta CF, Stanga R, Steier F, Sumner T, Texier D, Thorpe JI, Trenkel C, Tröbs M, Tu HB, Vetrugno D, Vitale S, Wand V, Wanner G, Ward H, Warren C, Wass PJ, Wealthy D, Weber WJ, Wissel L, Wittchen A, Zambotti A, Zanoni C, Ziegler T, Zweifel P. Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results. Phys Rev Lett. 2016 Jun 10;116(23):231101. doi: 10.1103/PhysRevLett.116.231101. Epub 2016 Jun 07. PMID: 27341221.
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Phys Rev Lett. 2016 Jun 10;116(23):231101. doi: 10.1103/PhysRevLett.116.231101. Epub 2016 Jun 07.

Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results.

Physical review letters

M Armano, H Audley, G Auger, J T Baird, M Bassan, P Binetruy, M Born, D Bortoluzzi, N Brandt, M Caleno, L Carbone, A Cavalleri, A Cesarini, G Ciani, G Congedo, A M Cruise, K Danzmann, M de Deus Silva, R De Rosa, M Diaz-Aguiló, L Di Fiore, I Diepholz, G Dixon, R Dolesi, N Dunbar, L Ferraioli, V Ferroni, W Fichter, E D Fitzsimons, R Flatscher, M Freschi, A F García Marín, C García Marirrodriga, R Gerndt, L Gesa, F Gibert, D Giardini, R Giusteri, F Guzmán, A Grado, C Grimani, A Grynagier, J Grzymisch, I Harrison, G Heinzel, M Hewitson, D Hollington, D Hoyland, M Hueller, H Inchauspé, O Jennrich, P Jetzer, U Johann, B Johlander, N Karnesis, B Kaune, N Korsakova, C J Killow, J A Lobo, I Lloro, L Liu, J P López-Zaragoza, R Maarschalkerweerd, D Mance, V Martín, L Martin-Polo, J Martino, F Martin-Porqueras, S Madden, I Mateos, P W McNamara, J Mendes, L Mendes, A Monsky, D Nicolodi, M Nofrarias, S Paczkowski, M Perreur-Lloyd, A Petiteau, P Pivato, E Plagnol, P Prat, U Ragnit, B Raïs, J Ramos-Castro, J Reiche, D I Robertson, H Rozemeijer, F Rivas, G Russano, J Sanjuán, P Sarra, A Schleicher, D Shaul, J Slutsky, C F Sopuerta, R Stanga, F Steier, T Sumner, D Texier, J I Thorpe, C Trenkel, M Tröbs, H B Tu, D Vetrugno, S Vitale, V Wand, G Wanner, H Ward, C Warren, P J Wass, D Wealthy, W J Weber, L Wissel, A Wittchen, A Zambotti, C Zanoni, T Ziegler, P Zweifel

Affiliations

  1. European Space Astronomy Centre, European Space Agency, Villanueva de la Cañada, 28692 Madrid, Spain.
  2. Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik und Leibniz Universität Hannover, Callinstraße 38, 30167 Hannover, Germany.
  3. APC, Université Paris Diderot, CNRS/IN2P3, CEA/lrfu, Obs de Paris, Sorbonne Paris Cité, France.
  4. High Energy Physics Group, Physics Department, Imperial College London, Blackett Laboratory, Prince Consort Road, London, SW7 2BW, United Kingdom.
  5. Dipartimento di Fisica, Università di Roma "Tor Vergata", and INFN, sezione Roma Tor Vergata, I-00133 Roma, Italy.
  6. Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, and Trento Institute for Fundamental Physics and Applications/INFN, Italy.
  7. Airbus Defence and Space, Claude-Dornier-Strasse, 88090 Immenstaad, Germany.
  8. European Space Technology Centre, European Space Agency, Keplerlaan 1, 2200 AG Noordwijk, Netherlands.
  9. Dipartimento di Fisica, Università di Trento and Trento Institute for Fundamental Physics and Applications/INFN, 38123 Povo, Trento, Italy.
  10. Istituto di Fotonica e Nanotecnologie, CNR-Fondazione Bruno Kessler, I-38123 Povo, Trento, Italy.
  11. The School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom.
  12. Dipartimento di Fisica, Università di Napoli "Federico II" and INFN-Sezione di Napoli, I-80126, Napoli, Italy.
  13. Institut de Ciències de l'Espai (CSIC-IEEC), Campus UAB, Carrer de Can Magrans s/n, 08193 Cerdanyola del Vallès, Spain.
  14. INFN-Sezione di Napoli, I-80126, Napoli, Italy.
  15. Airbus Defence and Space, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, United Kingdom.
  16. Institut für Geophysik, ETH Zürich, Sonneggstrasse 5, CH-8092, Zürich, Switzerland.
  17. Universitt Stuttgart, Institut fr Flugmechanik und Flugregelung, Pfaffenwaldring 27, 70569 Stuttgart, Germany.
  18. The UK Astronomy Technology Centre, Royal Observatory, Edinburgh, Blackford Hill, Edinburgh, EH9 3HJ, United Kingdom.
  19. INAF Osservatorio Astronomico di Capodimonte, I-80131 Napoli, Italy and INFN sezione di Napoli, I-80126 Napoli, Italy.
  20. DISPEA, Università di Urbino "Carlo Bo", Via S. Chiara, 27 61029 Urbino/INFN, Italy.
  21. European Space Operations Centre, European Space Agency, 64293 Darmstadt, Germany.
  22. Physik Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
  23. SUPA, Institute for Gravitational Research, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom.
  24. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain.
  25. CGS S.p.A, Compagnia Generale per lo Spazio, Via Gallarate, 150-20151 Milano, Italy.
  26. Gravitational Astrophysics Lab, NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, Maryland 20771, USA.
  27. Dipartimento di Fisica ed Astronomia, Università degli Studi di Firenze and INFN-Sezione di Firenze, I-50019 Firenze, Italy.

PMID: 27341221 DOI: 10.1103/PhysRevLett.116.231101

Abstract

We report the first results of the LISA Pathfinder in-flight experiment. The results demonstrate that two free-falling reference test masses, such as those needed for a space-based gravitational wave observatory like LISA, can be put in free fall with a relative acceleration noise with a square root of the power spectral density of 5.2±0.1  fm s^{-2}/sqrt[Hz], or (0.54±0.01)×10^{-15}  g/sqrt[Hz], with g the standard gravity, for frequencies between 0.7 and 20 mHz. This value is lower than the LISA Pathfinder requirement by more than a factor 5 and within a factor 1.25 of the requirement for the LISA mission, and is compatible with Brownian noise from viscous damping due to the residual gas surrounding the test masses. Above 60 mHz the acceleration noise is dominated by interferometer displacement readout noise at a level of (34.8±0.3)  fm/sqrt[Hz], about 2 orders of magnitude better than requirements. At f≤0.5  mHz we observe a low-frequency tail that stays below 12  fm s^{-2}/sqrt[Hz] down to 0.1 mHz. This performance would allow for a space-based gravitational wave observatory with a sensitivity close to what was originally foreseen for LISA.

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