Gravitational Wave Background from Magnetars

Details Gravitational Wave Background from Magnetars Gravitational Wave Background from Magnetars

2005-09-29

arxiv.org/abs/astro-ph/0509880v3

Astron.Astrophys.447:1,2006

Astronomy and Astrophysics

Astrophysics

accepted for publication in A&A; 17 pages, 7 figures; formula 21 has been corrected with respect to the published version

Scientific paper

10.1051/0004-6361:20053702

We investigate the gravitational wave background produced by magnetars. The statistical properties of these highly magnetized stars were derived by population synthesis methods and assumed to be also representative of extragalactic objects. The adopted ellipticity was calculated from relativistic models using equations of state and assumptions concerning the distribution of currents in the neutron star interior. The maximum amplitude occurs around 1.2 kHz, corresponding to $\Omega_{gw} \sim 10^{-9}$ for a type I superconducting neutron star model. The expected signal is a continuous background that could mask the cosmological contribution produced in the early stage of the Universe.

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