Gravitational radiation from chiral string cusps

Details Gravitational radiation from chiral string cusps Gravitational radiation from chiral string cusps

2003-03-31

arxiv.org/abs/astro-ph/0303659v1

Phys.Rev. D67 (2003) 125016

Astronomy and Astrophysics

Astrophysics

7 pages, 1 figure

Scientific paper

10.1103/PhysRevD.67.125016

We calculate the gravitational radiation from a cusp of the chiral cosmic strings as a function of the current on the string in the limit of small values of the current. The smoothing of the cosmic string cusp due to the presence of the superconducting current on the string leads to the different behavior of the gravitational radiation from the cusp as compared with the non-superconducting (ordinary) string. The difference between the gravitational energy radiation from the chiral cusp and the ordinary one is proportional to the value of the current on the string. It is shown that there is a high-frequency cutoff in the spectrum of the gravitational radiation from the chiral string. The frequency cutoff depends on the value of the string current. This effect is crucial for the detection of gravitation wave bursts from cosmic strings: the rather large current on the string would lower the amplitude of the incoming signal.

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