标题： 从脉动毫秒脉冲星发出的引力波 显示英文标题

标题： Gravitational wave emission from oscillating millisecond pulsars

摘要： 正在经历r模振荡的中子星会发出可能在地球上检测到的引力辐射。 对于已知的毫秒脉冲星，观测到的自转减慢率对这些源的可能引力波信号施加了一个上限。 考虑到r模演化的物理性质，我们表明只有自转频率高于几百赫兹的源才会对r模不稳定，并且利用r模饱和幅度对个别源的结构特性不敏感这一事实，得出了一个更严格的普遍r模自转减慢限制。 我们发现，这个改进的限制将毫秒脉冲星的引力波应变限制在下一代探测器的检测灵敏度以下。 因此，年轻的源在未来探测由r模发出的引力波以及研究致密星体内部组成方面是一个更有希望的选择。 显示英文摘要

摘要： Neutron stars undergoing r-mode oscillation emit gravitational radiation that might be detected on earth. For known millisecond pulsars the observed spindown rate imposes an upper limit on the possible gravitational wave signal of these sources. Taking into account the physics of r-mode evolution, we show that only sources spinning at frequencies above a few hundred Hertz can be unstable to r-modes, and we derive a more stringent universal r-mode spindown limit on their gravitational wave signal, exploiting the fact that the r-mode saturation amplitude is insensitive to the structural properties of individual sources. We find that this refined bound limits the gravitational wave strain from millisecond pulsars to values below the detection sensitivity of next-generation detectors. Young sources are therefore a more promising option for the detection of gravitational waves emitted by r-modes and to probe the interior composition of compact stars in the near future.