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Test of the Equivalence Principle for Superconductors
M. P. Ross, S. M. Fleischer, I. A. Paulson +9
We searched for violations of the weak equivalence principle using a cryogenic torsion balance with a pendulum comprised of superconducting niobium and copper. We constrain the Eöt…
Short-range tests of the equivalence principle
G. L. Smith, C. D. Hoyle, J. H. Gundlach +3
We tested the equivalence principle at short length scales by rotating a 3-ton U attractor around a compact torsion balance containing Cu and Pb test bodies. The observed d…
A Pseudo Plane-wave Gravitational Calibrator for Gravitational Wave Observatories
M. P. Ross, J. H. Gundlach, E. G. Adelberger +8
The precisions of existing gravitational calibrators for gravitational wave observatories are limited by their dependence on the relative position between the calibrators and the o…
Initial Results from the LIGO Newtonian Calibrator
Michael P. Ross, Timesh Mistry, Laurence Datrier +16
The precise calibration of the strain readout of the LIGO gravitational wave observatories is paramount to the accurate interpretation of gravitational wave events. This calibratio…
Torsion-balance tests of the weak equivalence principle
T. A. Wagner, S. Schlamminger, J. H. Gundlach +1
We briefly summarize motivations for testing the weak equivalence principle and then review recent torsion-balance results that compare the differential accelerations of beryllium-…
Test of the Equivalence Principle Using a Rotating Torsion Balance
S. Schlamminger, K. -Y. Choi, T. A. Wagner +2
We used a continuously rotating torsion balance instrument to measure the acceleration difference of beryllium and titanium test bodies towards sources at a variety of distances. O…