剪切弹性应力和磁场应力联合作用下中子星的扭转无节振动
Torsional nodeless vibrations of quaking neutron star restored by combined forces of shear elastic and magnetic field stresses
摘要：
在牛顿磁固体力学的框架内，依靠适合于被均匀磁场穿过的理想导电弹性连续介质的方程，本文讨论了中子星在胡克弹性力和洛伦兹磁力联合作用下发生轴对称全局扭转无节振动的星震模型，重点讨论了绕偶极微分旋转振动的环形阿尔文模式恒星的磁矩轴。将得到的频率谱方程应用于SGR 1806-20和SGR 1900+14巨耀斑期间X射线通量准周期振荡（QPO）的$\ell$ -极点识别。我们的计算表明，检测到的QPOs可以一致地解释，在这个模型的框架内，作为产生的全球扭转无节振动的震动磁星，如果他们被认为是恢复的剪切弹性和磁场应力的体积力的联合作用。
英文摘要：
Within the framework of Newtonian magneto-solid-mechanics, relying on equations appropriate for a perfectly conducting elastic continuous medium threaded by a uniform magnetic field, the asteroseismic model of a neutron star undergoing axisymmetric global torsional nodeless vibrations under the combined action of Hooke's elastic and Lorentz magnetic forces is considered with emphasis on a toroidal Alfvén mode of differentially rotational vibrations about the dipole magnetic moment axis of the star. The obtained spectral equation for frequency is applied to $\ell$-pole identification of quasi-periodic oscillations (QPOs) of X-ray flux during the giant flares of SGR 1806-20 and SGR 1900+14. Our calculations suggest that detected QPOs can be consistently interpreted, within the framework of this model, as produced by global torsional nodeless vibrations of quaking magnetar if they are considered to be restored by the joint action of bulk forces of shear elastic and magnetic field stresses.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
