Eigenfrequency of nodeless elastic vibrations locked in the crust of quaking neutron star

Details Eigenfrequency of nodeless elastic vibrations locked in the crust of quaking neutron star Eigenfrequency of nodeless elastic vibrations locked in the crust of quaking neutron star

2008-01-28

arxiv.org/abs/0801.4177v3

Mod. Phys. Lett. A, Vol. 23, No. 7 (2008) pp. 477-486

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures: Mod.Phys.Lett. A23 (2008) 477

Scientific paper

10.1142/S0217732308026534

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.

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