Absence of Gravity-Wave Signals in a Bar at 1695 Hz

Abstract

A 118-kg bar shows vector amplitude changes ("impulses") in successive 24-msec intervals which correspond to bar energies $E$ distributed with a probability $N=N_0\exp (-\frac{E}{k{T}_e})$, with $T_e\sim 30$ K. Not more than one impulse larger than 537 K was observed in 9 days. Calibration impulses giving the bar 600 K of energy were detected with 60% efficiency above a 537-K threshold. In the following Letter, these results are contrasted with the gravity-wave detections of Weber.