超流不稳定性能阻止中子星的进动吗？
Do superfluid instabilities prevent neutron star precession?
摘要：
本文讨论了在标准双流体中子星模型中，当沿超流中子涡旋阵列有足够的相对流动时，存在的短波长（惯性波）不稳定性。我们证明，这些不稳定性可能会触发进动中子星，因为在进动过程中的中子和质子流体的角速度矢量不一致。这种不稳定性的存在将使标准的固体旋转自由进动模型不一致。我们的研究结果表明，标准（欧拉）慢进动，结果弱阻力之间的旋涡和带电流体（质子和电子）是不严重的不稳定性的存在限制。相反，当涡旋与带电分量强烈耦合时产生的快速进动通常是不稳定的。这意味着在天体物理系统中可能无法实现快速岁差
英文摘要：
We discuss short wavelength (inertial wave) instabilities present in the standard two-fluid neutron star model when there is sufficient relative flow along the superfluid neutron vortex array. We demonstrate that these instabilities may be triggered in precessing neutron stars, since the angular velocity vectors of the neutron and proton fluids are misaligned during precession. The presence of such an instability would render the standard, solid body rotation, model for free precession inconsistent. Our results suggest that the standard (Eulerian) slow precession that results for weak drag between the vortices and the charged fluid (protons and electrons) is not seriously constrained by the existence of the instability. In contrast, the fast precession, which results when vortices are strongly coupled to the charged component, is generally unstable. This implies that fast precession may not be realised in astrophysical systems
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