Imperial College London


Faculty of Natural SciencesDepartment of Physics

Professor of Experimental Astrophysics



+44 (0)20 7594 7552t.sumner




1108Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Armano, M and Audley, H and Auger, G and Baird, JT and Bassan, M and Binetruy, P and Born, M and Bortoluzzi, D and Brandt, N and Caleno, M and Carbone, L and Cavalleri, A and Cesarini, A and Ciani, G and Congedo, G and Cruise, AM and Danzmann, K and de, Deus Silva M and De, Rosa R and Diaz-Aguiló, M and Di, Fiore L and Diepholz, I and Dixon, G and Dolesi, R and Dunbar, N and Ferraioli, L and Ferroni, V and Fichter, W and Fitzsimons, ED and Flatscher, R and Freschi, M and García, Marín AF and García, Marirrodriga C and Gerndt, R and Gesa, L and Gibert, F and Giardini, D and Giusteri, R and Guzmán, F and Grado, A and Grimani, C and Grynagier, A and Grzymisch, J and Harrison, I and Heinzel, G and Hewitson, M and Hollington, D and Hoyland, D and Hueller, M and Inchauspé, H and Jennrich, O and Jetzer, P and Johann, U and Johlander, B and Karnesis, N and Kaune, B and Korsakova, N and Killow, CJ and Lobo, JA and Lloro, I and Liu, L and López-Zaragoza, JP and Maarschalkerweerd, R and Mance, D },
doi = {10.1103/PhysRevLett.116.231101},
journal = {Physical Review Letters},
title = {Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results},
url = {},
volume = {116},
year = {2016}

RIS format (EndNote, RefMan)

AB - 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.
AU - Armano,M
AU - Audley,H
AU - Auger,G
AU - Baird,JT
AU - Bassan,M
AU - Binetruy,P
AU - Born,M
AU - Bortoluzzi,D
AU - Brandt,N
AU - Caleno,M
AU - Carbone,L
AU - Cavalleri,A
AU - Cesarini,A
AU - Ciani,G
AU - Congedo,G
AU - Cruise,AM
AU - Danzmann,K
AU - de,Deus Silva M
AU - De,Rosa R
AU - Diaz-Aguiló,M
AU - Di,Fiore L
AU - Diepholz,I
AU - Dixon,G
AU - Dolesi,R
AU - Dunbar,N
AU - Ferraioli,L
AU - Ferroni,V
AU - Fichter,W
AU - Fitzsimons,ED
AU - Flatscher,R
AU - Freschi,M
AU - García,Marín AF
AU - García,Marirrodriga C
AU - Gerndt,R
AU - Gesa,L
AU - Gibert,F
AU - Giardini,D
AU - Giusteri,R
AU - Guzmán,F
AU - Grado,A
AU - Grimani,C
AU - Grynagier,A
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 - Johann,U
AU - Johlander,B
AU - Karnesis,N
AU - Kaune,B
AU - Korsakova,N
AU - Killow,CJ
AU - Lobo,JA
AU - Lloro,I
AU - Liu,L
AU - López-Zaragoza,JP
AU - Maarschalkerweerd,R
AU - Mance,D
AU - Martín,V
AU - Martin-Polo,L
AU - Martino,J
AU - Martin-Porqueras,F
AU - Madden,S
AU - Mateos,I
AU - McNamara,PW
AU - Mendes,J
AU - Mendes,L
AU - Monsky,A
AU - Nicolodi,D
AU - Nofrarias,M
AU - Paczkowski,S
AU - Perreur-Lloyd,M
AU - Petiteau,A
AU - Pivato,P
AU - Plagnol,E
AU - Prat,P
AU - Ragnit,U
AU - Raïs,B
AU - Ramos-Castro,J
AU - Reiche,J
AU - Robertson,DI
AU - Rozemeijer,H
AU - Rivas,F
AU - Russano,G
AU - Sanjuán,J
AU - Sarra,P
AU - Schleicher,A
AU - Shaul,D
AU - Slutsky,J
AU - Sopuerta,CF
AU - Stanga,R
AU - Steier,F
AU - Sumner,T
AU - Texier,D
AU - Thorpe,JI
AU - Trenkel,C
AU - Tröbs,M
AU - Tu,HB
AU - Vetrugno,D
AU - Vitale,S
AU - Wand,V
AU - Wanner,G
AU - Ward,H
AU - Warren,C
AU - Wass,PJ
AU - Wealthy,D
AU - Weber,WJ
AU - Wissel,L
AU - Wittchen,A
AU - Zambotti,A
AU - Zanoni,C
AU - Ziegler,T
AU - Zweifel,P
DO - 10.1103/PhysRevLett.116.231101
PY - 2016///
SN - 1079-7114
TI - Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results
T2 - Physical Review Letters
UR -
UR -
VL - 116
ER -