Gravitational Radiation from Accreting Neutron Stars

Details Gravitational Radiation from Accreting Neutron Stars Gravitational Radiation from Accreting Neutron Stars

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.1865m&link_type=abstract

American Astronomical Society, HEAD meeting #9, #18.65; Bulletin of the American Astronomical Society, Vol. 38, p.393

Astronomy and Astrophysics

Astronomy

Scientific paper

Accreting neutron stars spinning at near-kHz frequencies are thought to be strong gravitational wave (GW) emitters. X-ray timing experiments reveal a dearth of such objects spinning near break up, suggesting that GW emission stalls recycling by accretion. We present recent numerical modeling of two new GW emission mechanisms in this class of sources: (i) hydromagnetic oscillations of a magnetically confined polar mountain on the stellar surface, and (ii) nonaxisymmetric internal motions caused by high-Reynolds-number superfluid spherical Couette flow in the outer core of the star. GW amplitudes and spectra are computed for both processes, which are potentially detectable by LIGO II.

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