English

Gravitational Wave Background from Magnetars

Astrophysics 2009-11-16 v3 General Relativity and Quantum Cosmology

Abstract

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 Ωgw109\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.

Keywords

Cite

@article{arxiv.astro-ph/0509880,
  title  = {Gravitational Wave Background from Magnetars},
  author = {Tania Regimbau and José Antonio de Freitas Pacheco},
  journal= {arXiv preprint arXiv:astro-ph/0509880},
  year   = {2009}
}

Comments

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