论文标题
用$ r $ -mode物理来限制中子超流体
Constraining neutron superfluidity with $r$-mode physics
论文作者
论文摘要
我们利用了$ r $ - modes的谐振稳定效果，限制了中子恒星核心中的中子超流体的参数。为此，对于旋转超级流体中子恒星的现实模型，我们首次计算有限的$ r $ r $ mmode光谱，这构成了内部内部的Muons和中子 - 普罗顿的夹带。我们发现，在某些恒星温度和旋转频率下，普通的（正常）$ r $ mmode避免了具有超氟$ r $ modes的过道。在避免过境的地方，正常的$ r $ mmode会大大消散，从而导致那里的$ r $ mmode不稳定。避免穿越对中子超流体模型的位置的极端敏感性使我们能够通过与低质量X射线二进制中快速旋转的中子恒星的观察来面对计算出的光谱来限制后者。
We constrain the parameters of neutron superfluidity in the cores of neutron stars making use of the recently proposed effect of resonance stabilization of $r$-modes. To this end, we, for the first time, calculate the finite-temperature $r$-mode spectra for realistic models of rotating superfluid neutron stars, accounting for both muons and neutron-proton entrainment in their interiors. We find that the ordinary (normal) $r$-mode exhibits avoided crossings with superfluid $r$-modes at certain stellar temperatures and spin frequencies. Near the avoided crossings, the normal $r$-mode dissipates strongly, which leads to substantial suppression of the $r$-mode instability there. The extreme sensitivity of the positions of avoided crossings to the neutron superfluidity model allows us to constrain the latter by confronting the calculated spectra with observations of rapidly rotating neutron stars in low-mass X-ray binaries.
