AI Article Synopsis
- * The interferometer operated stably and reliably throughout the mission, achieving extremely low noise levels that exceeded performance expectations.
- * The report also provides insights into the sensitivity and performance limits of the sensor at very low frequencies, particularly above 200 mHz.
Article Abstract
We report on the first subpicometer interferometer flown in space. It was part of ESA's Laser Interferometer Space Antenna (LISA) Pathfinder mission and performed the fundamental measurement of the positional and angular motion of two free-falling test masses. The interferometer worked immediately, stably, and reliably from switch on until the end of the mission with exceptionally low residual noise of 32.0_{-1.7}^{+2.4} fm/sqrt[Hz], significantly better than required. We present an upper limit for the sensor performance at millihertz frequencies and a model for the measured sensitivity above 200 mHz.
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| http://dx.doi.org/10.1103/PhysRevLett.126.131103 | DOI Listing |
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