Gravitational-radiation-detector observations in 1973 and 1974

Abstract

Results of observations of the Argonne-Maryland gravitational radiation detectors during the period May 1973-July 1974 are presented. Previously published data are corrected for a computer programming error. For certain continuous periods we observe an excess of coincidences over the accidental ones. The excess is more significant for the algorithm ${[(\frac{d}{\mathrm{dt}})({x}^{2}+{y}^{2})]}^{2}$ than for the algorithm ${(\frac{\mathrm{dx}}{\mathrm{dt}})}^{2}+{(\frac{\mathrm{dy}}{\mathrm{dt}})}^{2}$. This gives information concerning pulse length and spectral character, and implies that published sensitivity calculations are not applicable to these experiments.