Measurement at 4.2 K of the Brownian noise in a 20 KG gravitational wave antenna and upper limit for gravitational radiation at 8580 HZ

Physics

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Antennas, Gravitational Waves, Low Temperature, Radiant Flux Density, Random Noise, Autocorrelation, Ceramics, Frequency Distribution, Histograms

Scientific paper

A small 20-kg gravitational wave antenna cooled to 4.2 K with a
piezoelectric ceramic vibration detector was tested, and it was found
that it does indeed observe the effective Brownian noise at 4.2 K with
no extra pulses within statistical fluctuations. It was possible to
determine an upper limit to the flux of gravitational waves at 8580 Hz.

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