Observational Limits on a Millihertz Stochastic Background of Gravitational Radiation
Abstract
An analysis of 100 station years of quiet seismic data shows no evidence of the excitation of earth by a stochastic background of gravitational radiation. The absence of excitation of the two quadrupole modes which couple most strongly to gravitational waves (GWs) implies 1 sigma upper limts on a GW background of 1.7 x 10 to the 5th J/cu cm Hz and 6.1 x 10 to the 6th J/cu m Hz at frequencies of 0.31 mHz and 1.72 mHz, respectively. Although these limits are factors of 1300 and 33 lower than previous limits at these frequencies they are both above the critical density of the universe per octave and are, therefore, relatively uninteresting from a cosmological point of view.
 Publication:

The Astrophysical Journal
 Pub Date:
 May 1990
 DOI:
 10.1086/168702
 Bibcode:
 1990ApJ...354..406B
 Keywords:

 Background Radiation;
 Cosmology;
 Gravitation Theory;
 Gravitational Waves;
 Stochastic Processes;
 Gravitational Wave Antennas;
 Line Spectra;
 Seismic Waves;
 Astrophysics;
 COSMOLOGY;
 GRAVITATION;
 RADIATION MECHANISMS