An upper limit for the intensity of gravitational wave bursts from ground-based seismic observations

Details An upper limit for the intensity of gravitational wave bursts from ground-based seismic observations An upper limit for the intensity of gravitational wave bursts from ground-based seismic observations

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997azh....74..354k&link_type=abstract

Astronomicheskij Zhurnal, vol. 74, p. 354

Astronomy and Astrophysics

Astronomy

Gravitational Waves, Seismology, Cosmic Rays, Earth Surface, Radiant Flux Density, Digital Techniques, Signal Analysis

Scientific paper

Seismic disturbances induced by cosmic gravitational radiation are considered. A model with a spherically symmetric, homogeneous, isotropic Earth and a four-channel adaptive seismic antenna array on its surface is used for calculations in the frequency range 0.01-0.1 Hz. An integral estimate of the upper limit to the intensity of gravitational wave bursts h(up) = (1.0 +/- 0.1) x 10 exp -14 in terms of the dimensionless amplitude of spatial metric variations is obtained using digital seismic data obtained over a six-month time interval. An equivalent recalculation of h(up) in terms of the spectral intensity of the gravitational wave radiation flux density Ig gives a majorizing estimate for the upper limit of Ig less than 1.6 x 10 exp 8 erg/s sq cm Hz.

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