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Gravitational waves from an accreting neutron star with a magnetic mountain

Payne, D. J. B. and Melatos, A. and Phinney, E. S. (2003) Gravitational waves from an accreting neutron star with a magnetic mountain. In: Astrophysics of Gravitational Wave Sources. AIP Conference Proceedings. No.686. American Institute of Physics , Melville, N.Y., pp. 92-95. ISBN 0-7354-0157-8 http://resolver.caltech.edu/CaltechAUTHORS:20111026-114124672

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Abstract

We calculate the amplitude of gravitational waves from a neutron star accreting symmetrically at its magnetic poles. The magnetic field, which is compressed into an equatorial belt during accretion, confines accreted matter in a mountain at the magnetic pole, producing gravitational waves. We compute hydromagnetic equilibria and the corresponding quadrupole moment as a function of the accreted mass, Ma, finding the polarization- and orientation- averaged wave strain at Earth to be h_c = 6.3 × 10^(–25)(M_a/10^(–5)M_☉)(ƒ/0.6kHz)^2(d/1kpc)^(–1) for a range of conditions, where ƒ is the wave frequency and d is the distance to the source. This is ~ 10^2 times greater than previous estimates, which failed to treat the mass-flux distribution self-consistently with respect to flux-freezing


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.1629420 DOIUNSPECIFIED
http://link.aip.org/link/?APCPCS/686/92/1PublisherUNSPECIFIED
Additional Information:© 2003 American Institute of Physics. Issue Date: 15 October 2003.
Group:TAPIR
Subject Keywords:gravitational waves, astrophysical radiation mechanisms, neutron stars, accretion, magnetic fields, numerical analysis
Classification Code:PACS: 04.30.Db; 97.60.Jd; 97.10.Gz
Record Number:CaltechAUTHORS:20111026-114124672
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20111026-114124672
Official Citation:Gravitational waves from an accreting neutron star with a magnetic mountain D. J. B. Payne, A. Melatos, and E. S. Phinney, AIP Conf. Proc. 686, 92 (2003), DOI:10.1063/1.1629420
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27451
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Oct 2011 20:36
Last Modified:26 Dec 2012 14:19

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