标题： 引力波源可能比我们想象的“更远” 显示英文标题

标题： Gravitational Wave Sources May Be "Further" Than We Think

摘要： 有人认为，可以通过使用时空流形中测地线方程的近似李对称性来获得时变时空的能量内容。 当应用于圆柱形引力波时，它会给出波的自阻尼效应。 根据这一提议，波的能量会以径向距离的三分之二次幂渐近趋于零。 如果正确的话，这意味着必须重新评估针对各种源的探测器灵敏度的估计值。 显示英文摘要

摘要： It has been argued that the energy content in time varying spacetimes can be obtained by using the approximate Lie symmetries of the geodesics equations in that spacetime. When applied to cylindrical gravitational waves, it gives a self-damping of the waves. According to this proposal the energy of the waves go to zero asymptotically as the radial distance to the two-thirds power. If true, this would mean that the estimates for the sensitivity of the detectors for the various sources would have to be revised