Gravitational wave background from magnetars

Free access article

Issue		A&A Volume 447, Number 1, February III 2006


Page(s)		1 - 7
Section		Astrophysical processes
DOI		http://dx.doi.org/10.1051/0004-6361:20053702

A&A 447, 1-7 (2006)
DOI: 10.1051/0004-6361:20053702

Gravitational wave background from magnetars

T. Regimbau and J. A. de Freitas Pacheco

Observatoire de la Côte d'Azur, Dpt. ARTEMIS and Dpt. CASSIOPEE, BP 4229, 06304 Nice Cedex 4, France
e-mail: regimbau@obs-nice.fr

(Received 27 June 2005 / Accepted 27 September 2005 )

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 $\Omega_{\rm gw} \sim 10^{-9}$ 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.

Key words: stars: neutron -- stars: magnetic fields -- gravitational waves

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.