Frequency spectrum of toroidal Alfvén mode in a neutron star with Ferraro’s form of nonhomogeneous poloidal magnetic field |
| |
Authors: | S I Bastrukov H-K Chang I V Molodtsova E-H Wu G-T Chen S-H Lan |
| |
Institution: | 1.Institute of Astronomy,National Tsing Hua University,Hsinchu,Taiwan;2.Department of Physics,National Tsing Hua University,Hsinchu,Taiwan;3.Joint Institute for Nuclear Research,Dubna,Russia |
| |
Abstract: | Using the energy variational method of magneto-solid-mechanical theory of a perfectly conducting elastic medium threaded by
magnetic field, the frequency spectrum of Lorentz-force-driven global torsional nodeless vibrations of a neutron star with
Ferraro’s form of axisymmetric poloidal nonhomogeneous internal and dipole-like external magnetic field is obtained and compared
with that for this toroidal Alfvén mode in a neutron star with homogeneous internal and dipolar external magnetic field. The
relevance of considered asteroseismic models to quasi-periodic oscillations of the X-ray flux during the ultra powerful outbursts
of SGR 1806−20 and SGR 1900+14 is discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|