Gravitational wave background from hybrid topological defects

Details Gravitational wave background from hybrid topological defects Gravitational wave background from hybrid topological defects

1996-06-04

arxiv.org/abs/astro-ph/9606022v3

Phys.Rev.Lett. 77 (1996) 2879-2882

Astronomy and Astrophysics

Astrophysics

11 pages, uses ReVTeX, 2 postscript figures. Detection of a gravitational background by first generation detectors is only mar

Scientific paper

10.1103/PhysRevLett.77.2879

We investigate the spectrum of stochastic gravitational wave background generated by hybrid topological defects: domain walls bounded by strings and monopoles connected by strings. Such defects typically decay early in the history of the universe, and their mass scale is not subject to the constraints imposed by microwave background and millisecond pulsar observations. Nonetheless, the intensity of the gravitational wave background from hybrid defects can be quite high at frequencies above $10^{-8} Hz$, and in particular in the frequency range of LIGO, VIRGO and LISA detectors.

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