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

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dc.identifier.uri Armano, M. Audley, H. Auger, G. Baird, J.T. Bassan, M. Binetruy, P. Born, Michael Bortoluzzi, D. Brandt, N. Caleno, M. Carbone, L. Cavalleri, A. Cesarini, A. Ciani, G. Congedo, G. Cruise, A.M. Danzmann, Karsten De Deus Silva, M. De Rosa, R. Diaz-Aguiló, M. et al. 2016-11-29T13:02:29Z 2016-11-29T13:02:29Z 2016
dc.identifier.citation Armano, M.; Audley, H.; Auger, G.; Baird, J.T. et al. : Sub-Femto- g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results. In: Physical Review Letters 116 (2016), Nr. 23, 231101. DOI:
dc.description.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. eng
dc.description.sponsorship CNES 1316634/CNRS 103747
dc.description.sponsorship UnivEarthS Labex program/ANR-10-LABX-0023
dc.description.sponsorship UnivEarthS Labex program/ANR-11-IDEX-0005-02
dc.description.sponsorship DLR
dc.description.sponsorship Federal Ministry for Economic Affairs and Energy/FKZ 50OQ0501
dc.description.sponsorship Federal Ministry for Economic Affairs and Energy/FKZ 50OQ1601
dc.description.sponsorship Agenzia Spaziale Italiana
dc.description.sponsorship Instituto Nazionale di Fisica Nucleare
dc.description.sponsorship AYA2010-15709 (MICINN)
dc.description.sponsorship ESP2013-47637-P (MINECO)
dc.description.sponsorship ESP2015-67234-P (MINECO)
dc.description.sponsorship Fundacion General CSIC
dc.description.sponsorship Swiss Space Office (SSO)
dc.description.sponsorship Swiss National Science Foundation
dc.description.sponsorship United Kingdom Space Agency (UKSA)
dc.description.sponsorship University of Glasgow
dc.description.sponsorship University of Birmingham
dc.description.sponsorship Imperial College
dc.description.sponsorship Scottish Universities Physics Alliance (SUPA)
dc.description.sponsorship U.S. National Aeronautics and Space Administration (NASA)
dc.language.iso eng
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Review Letters 116 (2016), Nr. 23
dc.rights CC BY 3.0 Unported
dc.subject Gravitation eng
dc.subject Gravitational effects eng
dc.subject Gravity waves eng
dc.subject Ion beams eng
dc.subject Observatories eng
dc.subject Power spectral density eng
dc.subject Spectral density eng
dc.subject Brownian noise eng
dc.subject Flight experiments eng
dc.subject Gravitational-wave observatory eng
dc.subject LISA Pathfinder eng
dc.subject Orders of magnitude eng
dc.subject Readout noise eng
dc.subject Gravitationswelle ger
dc.subject.ddc 500 | Naturwissenschaften ger
dc.subject.ddc 530 | Physik ger
dc.title Sub-Femto- g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results eng
dc.type article
dc.type Text
dc.relation.essn 1079-7114
dc.relation.issn 0031-9007
dc.bibliographicCitation.issue 23
dc.bibliographicCitation.volume 116
dc.bibliographicCitation.firstPage 231101
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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