Eigenfrequency of nodeless elastic vibrations locked in the crust of quaking neutron star
arXiv:0801.4177 · doi:10.1142/S0217732308026534
Abstract
The Newtonian solid-mechanical theory of non-compressional spheroidal and torsional nodeless elastic vibrations in the homogenous crust model of a quaking neutron star is developed and applied to the modal classification of the quasi-periodic oscillations (QPOs) of X-ray luminosity in the aftermath of giant flares in SGR 1806-20 and SGR 1900+14. Particular attention is given to the low-frequency QPOs in the data for SGR 1806-20 whose physical origin has been called into question. Our calculations suggest that unspecified QPOs are due to nodeless dipole torsional and dipole spheroidal elastic shear vibrations.
10 pages, 3 figures: Mod.Phys.Lett. A23 (2008) 477
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