Gravitational waves from kinks on infinite cosmic strings

Details Gravitational waves from kinks on infinite cosmic strings Gravitational waves from kinks on infinite cosmic strings

2010-02-03

arxiv.org/abs/1002.0652v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

29 pages, 4figures

Scientific paper

Gravitational waves emitted by kinks on infinite strings are investigated using detailed estimations of the kink distribution on infinite strings. We find that gravitational waves from kinks can be detected by future pulsar timing experiments such as SKA for an appropriate value of the the string tension, if the typical size of string loops is much smaller than the horizon at their formation. Moreover, the gravitational wave spectrum depends on the thermal history of the Universe and hence it can be used as a probe into the early evolution of the Universe.

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