Anomalous Fiber Optic Gyroscope Signals Observed above Spinning Rings at Low Temperature

Details Anomalous Fiber Optic Gyroscope Signals Observed above Spinning Rings at Low Temperature Anomalous Fiber Optic Gyroscope Signals Observed above Spinning Rings at Low Temperature

2008-06-13

arxiv.org/abs/0806.2271v2

J.Phys.Conf.Ser.150:032101,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Poster presented at the 25th Low Temperature Physics Conference, Amsterdam, Aug 2008, to appear in the Journal of Physics Conf

Scientific paper

10.1088/1742-6596/150/3/032101

Precision fiber optic gyroscopes were mounted mechanically de-coupled above spinning rings inside a cryostat. Below a critical temperature (typically <30 K), the gyroscopes measure a significant deviation from their usual offset due to Earth's rotation. This deviation is proportional to the applied angular ring velocity with maximum signals towards lower temperatures. The anomalous gyroscope signal is about 8 orders of magnitude smaller then the applied angular ring velocity, compensating about one third of the Earth rotation offset at an angular top speed of 420 rad/s. Moreover, our data shows a parity violation as the effect appears to be dominant for rotation against the Earth's spin. No systematic effect was found to explain this effect including the magnetic environment, vibration and helium gas friction suggesting that our observation is a new low temperature phenomenon. Tests in various configurations suggest that the rotating low temperature helium may be the source of our anomalous signals.

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