Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 061101 |
| Seitenumfang | 7 |
| Fachzeitschrift | Physical review letters |
| Jahrgang | 120 |
| Ausgabenummer | 6 |
| Publikationsstatus | Veröffentlicht - 5 Feb. 2018 |
Abstract
In the months since the publication of the first results, the noise performance of LISA Pathfinder has improved because of reduced Brownian noise due to the continued decrease in pressure around the test masses, from a better correction of noninertial effects, and from a better calibration of the electrostatic force actuation. In addition, the availability of numerous long noise measurement runs, during which no perturbation is purposely applied to the test masses, has allowed the measurement of noise with good statistics down to 20 μHz. The Letter presents the measured differential acceleration noise figure, which is at (1.74±0.01) fm s-2/Hz above 2 mHz and (6±1)×10 fm s-2/Hz at 20 μHz, and discusses the physical sources for the measured noise. This performance provides an experimental benchmark demonstrating the ability to realize the low-frequency science potential of the LISA mission, recently selected by the European Space Agency.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical review letters, Jahrgang 120, Nr. 6, 061101, 05.02.2018.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
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TY - JOUR
T1 - Beyond the Required LISA Free-Fall Performance: New LISA Pathfinder Results down to 20μHz
AU - LISA Pathfinder Collaboration
AU - Armano, M.
AU - Audley, H.
AU - Baird, J.
AU - Binetruy, P.
AU - Born, M.
AU - Bortoluzzi, D.
AU - Castelli, E.
AU - Cavalleri, A.
AU - Cesarini, A.
AU - Cruise, A. M.
AU - Danzmann, K.
AU - De Deus Silva, M.
AU - Diepholz, I.
AU - Dixon, G.
AU - Dolesi, R.
AU - Ferraioli, L.
AU - Ferroni, V.
AU - Fitzsimons, E. D.
AU - Freschi, M.
AU - Gesa, L.
AU - Gibert, F.
AU - Giardini, D.
AU - Giusteri, R.
AU - Grimani, C.
AU - Grzymisch, J.
AU - Harrison, I.
AU - Heinzel, G.
AU - Hewitson, M.
AU - Hollington, D.
AU - Hoyland, D.
AU - Hueller, M.
AU - Inchauspé, H.
AU - Jennrich, O.
AU - Jetzer, P.
AU - Karnesis, N.
AU - Kaune, B.
AU - Korsakova, N.
AU - Killow, C. J.
AU - Lobo, J. A.
AU - Lloro, I.
AU - Liu, L.
AU - López-zaragoza, J. P.
AU - Maarschalkerweerd, R.
AU - Mance, D.
AU - Meshksar, N.
AU - Martín, V.
AU - Martin-polo, L.
AU - Martino, J.
AU - Martin-porqueras, F.
AU - Mateos, I.
AU - Nofrarias, Miguel
AU - Paczkowski, S.
AU - Perreur-Lloyd, M.
AU - Petiteau, A.
AU - Pivato, P.
AU - Plagnol, E.
AU - Ramos-Castro, J.
AU - Reiche, Jens
AU - Robertson, D. I.
AU - Rivas, F.
AU - Russano, G.
AU - Slutsky, J.
AU - Sopuerta, Carlos F.
AU - Sumner, Tim J.
AU - Texier, D.
AU - Thorpe, J. I.
AU - Vetrugno, D.
AU - Vitale, S.
AU - Wanner, Gudrun
AU - Ward, H.
AU - Wass, P. J.
AU - Weber, W. J.
AU - Wissel, L.
AU - Wittchen, A.
AU - Zweifel, Philipp
N1 - Funding information: This work has been made possible by the LISA Pathfinder mission, which is part of the space-science program of the European Space Agency. The French contribution has been supported by the CNES (Accord Specific de projet CNES 1316634/CNRS 103747), the CNRS, the Observatoire de Paris, and the University Paris-Diderot. E. P. and H. I. also acknowledge the financial support of the UnivEarthS Labex program at Sorbonne Paris Cité (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02). The Albert-Einstein-Institut acknowledges the support of the German Space Agency, DLR. The work is supported by the Federal Ministry for Economic Affairs and Energy based on a resolution of the German Bundestag (FKZ 50OQ0501 and FKZ 50OQ1601). The Italian contribution has been supported by Agenzia Spaziale Italiana and Instituto Nazionale di Fisica Nucleare. The Spanish contribution has been supported by Contracts No. AYA2010-15709 (MICINN), No. ESP2013-47637-P, and No. ESP2015-67234-P (MINECO). M. N. acknowledges support from Fundacion General CSIC (Programa ComFuturo). F. R. acknowledges an FPI contract (MINECO). The Swiss contribution acknowledges the support of the Swiss Space Office (SSO) via the PRODEX Program of ESA. L. F. acknowledges the support of the Swiss National Science Foundation. The United Kingdom groups acknowledge support from the United Kingdom Space Agency (UKSA), the University of Glasgow, the University of Birmingham, Imperial College, and the Scottish Universities Physics Alliance (SUPA). J. I. T. and J. S. acknowledge the support of the U.S. National Aeronautics and Space Administration (NASA). N. Korsakova acknowledges the support of the Newton International Fellowship from the Royal Society.
PY - 2018/2/5
Y1 - 2018/2/5
N2 - In the months since the publication of the first results, the noise performance of LISA Pathfinder has improved because of reduced Brownian noise due to the continued decrease in pressure around the test masses, from a better correction of noninertial effects, and from a better calibration of the electrostatic force actuation. In addition, the availability of numerous long noise measurement runs, during which no perturbation is purposely applied to the test masses, has allowed the measurement of noise with good statistics down to 20 μHz. The Letter presents the measured differential acceleration noise figure, which is at (1.74±0.01) fm s-2/Hz above 2 mHz and (6±1)×10 fm s-2/Hz at 20 μHz, and discusses the physical sources for the measured noise. This performance provides an experimental benchmark demonstrating the ability to realize the low-frequency science potential of the LISA mission, recently selected by the European Space Agency.
AB - In the months since the publication of the first results, the noise performance of LISA Pathfinder has improved because of reduced Brownian noise due to the continued decrease in pressure around the test masses, from a better correction of noninertial effects, and from a better calibration of the electrostatic force actuation. In addition, the availability of numerous long noise measurement runs, during which no perturbation is purposely applied to the test masses, has allowed the measurement of noise with good statistics down to 20 μHz. The Letter presents the measured differential acceleration noise figure, which is at (1.74±0.01) fm s-2/Hz above 2 mHz and (6±1)×10 fm s-2/Hz at 20 μHz, and discusses the physical sources for the measured noise. This performance provides an experimental benchmark demonstrating the ability to realize the low-frequency science potential of the LISA mission, recently selected by the European Space Agency.
UR - http://www.scopus.com/inward/record.url?scp=85041808456&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.120.061101
DO - 10.1103/PhysRevLett.120.061101
M3 - Article
VL - 120
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 6
M1 - 061101
ER -