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

Armano, M., Audley, H., Auger, G., Baird, J. T., Bassan, M., Binetruy, P., et al. (2016). Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results. Physical Review Letters, 116: 231101. doi:http://dx.doi.org/10.1103/PhysRevLett.116.231101.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-60FB-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-60FC-0
Genre: Journal Article

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PhysRevLett.116.231101.pdf (Any fulltext), 657KB
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Armano, M., Author
Audley, H.1, Author              
Auger, G., Author
Baird, J. T., Author
Bassan, M., Author
Binetruy, P., Author
Born, M.1, Author              
Bortoluzzi, D., Author
Brandt, N., Author
Caleno, M., Author
Carbone, L., Author
Cavalleri, A., Author
Cesarini, A., Author
Ciani, G., Author
Congedo, G., Author
Cruise, A. M., Author
Danzmann, K.1, Author              
de Silva, M. Deus, Author
Rosa, R. De, Author
Diaz-Aguiló, M., Author
Fiore, L. Di, AuthorDiepholz, I., AuthorDixon, G., AuthorDolesi, R., AuthorDunbar, N., AuthorFerraioli, L., AuthorFerroni, V., AuthorFichter, W., AuthorFitzsimons, E. D., AuthorFlatscher, R., AuthorFreschi, M., AuthorGarcia Marin, A. F.1, Author              Garcia Marirrodriga, C. , AuthorGerndt, R., AuthorGesa, L., AuthorGibert, F., AuthorGiardini, D., AuthorGiusteri, R., AuthorGuzman, F.1, Author              Grado, ∥ A., AuthorGrimani, C., AuthorGrynagier, A., AuthorGrzymisch, ¶ J., AuthorHarrison, I., AuthorHeinzel, G.1, Author              Hewitson, M.2, Author              Hollington, D., AuthorHoyland, D., AuthorHueller, M., AuthorInchauspé, H., AuthorJennrich, O., AuthorJetzer, P., AuthorJohann, U., AuthorJohlander, B., AuthorKarnesis, N.3, AuthorKaune, B.3, AuthorKorsakova, N.3, AuthorKillow, C. J., AuthorLobo, J. A., AuthorLloro, I., AuthorLiu, L., AuthorLópez-Zaragoza, J. P., AuthorMaarschalkerweerd, R., AuthorMance, D., AuthorMartín, V., AuthorMartin-Polo, L., AuthorMartino, J., AuthorMartin-Porqueras, F., AuthorMadden, S., AuthorMateos, I., AuthorMcNamara, P. W., AuthorMendes, J., AuthorMendes, L., AuthorMonsky, A.1, Author              Nicolodi, D., AuthorNofrarias, M., AuthorPaczkowski, S.3, AuthorPerreur-Lloyd, M., AuthorPetiteau, A., AuthorPivato, P., AuthorPlagnol, E., AuthorPrat, P., AuthorRagnit, U., AuthorRaïs, B., AuthorRamos-Castro, J., AuthorReiche, J.1, Author              Robertson, D. I., AuthorRozemeijer, H., AuthorRivas, F., AuthorRussano, G., AuthorSanjuán, J., AuthorSarra, P., AuthorSchleicher, A., AuthorShaul, D., AuthorSlutsky, J., AuthorSopuerta, C. F., AuthorStanga, R., AuthorSteier, F.1, Author              Sumner, T., AuthorTexier, D., AuthorThorpe, J. I., AuthorTrenkel, C., AuthorTröbs, M.1, Author              Tu, H. B., AuthorVetrugno, D., AuthorVitale, S., AuthorWand, V.1, Author              Wanner, G.1, Author              Ward, H., AuthorWarren, C., AuthorWass, P. J., AuthorWealthy, D., AuthorWeber, W. J., AuthorWissel, L.3, AuthorWittchen, A.3, AuthorZambotti, A., AuthorZanoni, C., AuthorZiegler, T., AuthorZweifel, P., Author more..
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24010              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24011              
3AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, escidoc:24009              

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 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/Hz−−−√, or (0.54±0.01)×10−15  g/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/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/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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 Dates: 2016
 Publication Status: Published in print
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 116 Sequence Number: 231101 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925433406_1