A maximal background spectrum of gravitational radiation

Details A maximal background spectrum of gravitational radiation A maximal background spectrum of gravitational radiation

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..45..447r&link_type=abstract

Astrophysics and Space Science, vol. 45, Dec. 1976, p. 447-466.

Astronomy and Astrophysics

Astronomy

22

Black Holes (Astronomy), Extragalactic Radio Sources, Galactic Evolution, Gravitational Collapse, Gravitational Waves, Spectrum Analysis, Binary Stars, Cosmology, Electromagnetic Spectra, Mass Distribution, Relativity, Stellar Mass

Scientific paper

A maximal spectrum of gravitational radiation from sources outside our Galaxy is calculated. The sources are galaxies, quasars, and events that occurred in the early history of the Universe. The major contribution is from galaxies whose effect extends over the frequency region from 1 hundred-millionth to 10,000 Hz, peaking at 0.1 to 10 Hz, with a spectral flux of 10 erg/sq cm/sec per Hz. The main processes of gravitational radiation in the galaxies are stellar collapse into a black hole and dying binary systems. In the region between 0.0001 and 10,000 Hz, the background spectrum is well above the detection levels of currently proposed detectors. From minimal considerations of this spectrum, it is determined that the density of gravitational radiation is at least 10 to the -39th power g/cu cm. This background spectrum is sensitive to galactic evolution and especially sensitive to the upper mass limits and mass distribution of stars in galactic models. Therefore, the spectrum could provide information about galactic evolution complementary to that obtained by electromagnetic investigations.

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