论文标题
中子星形外壳可以支撑大椭圆
Neutron Star Crust Can Support A Large Ellipticity
论文作者
论文摘要
在快速旋转的中子星上，地壳的非轴对称变形是搜索连续重力波的主要目标之一。惯性矩的最大椭圆度或分数差异可以由外壳的变形（称为“山区”）支持，这为这些连续重力波源的强度提供了重要的上限。我们使用Gittins等2021的形式主义以及主要作用于横向方向的变形力，以获得7.4 $ \ times $ 10 $^{ - 6} $的最大椭圆度。这比Gittins等人2021的原始结果大，但与Ushomirsky等人2000的早期计算一致。这表明旋转中子星可以是连续重力波的强大来源。
Non-axisymmetrical deformations of the crust on rapidly rotating neutron stars are one of the main targets of searches for continuous gravitational waves. The maximum ellipticity, or fractional difference in moments of inertia, that can be supported by deformations of the crust (known as "mountains") provides an important upper limit on the strength of these continuous gravitational wave sources. We use the formalism of Gittins et al 2021, along with a deforming force that acts mainly in the transverse direction, to obtain a maximum ellipticity of 7.4$\times$10$^{-6}$. This is larger than the original results of Gittins et al 2021 but consistent with earlier calculations by Ushomirsky et al 2000. This suggests that rotating neutron stars could be strong sources of continuous gravitational waves.
