论文标题
引力闪烁：可检测到的重力波尾来自恒星和紧凑物体
Gravitational glint: Detectable gravitational wave tails from stars and compact objects
论文作者
论文摘要
通过激光干涉仪重力引力波观测站（LIGO）以及在电磁辐射的频谱中观察到两种引力波中的合并中子星二进制，通过无数望远镜的观察，已使用无数望远镜来表明，引力波在真空中以无处不在的一部分而在一部分中占据了一部分。然而，长期以来一直期望的是，当电磁波或引力波在弯曲的时空中通过真空传播时，波会发展出“尾巴”，从而更慢地传播。相关信号被认为是不可检测的弱。在这里，我们证明了引力波有效地由普通的紧凑物体（恒星，白矮人，中子星和行星）产生的曲率散布，以及某些用于暗物质的候选者，填充了无效锥体的内部。由此产生的“引力闪烁”应立即检测到，并且可以识别（除了行星以外的所有行星），这是从极端信号的主要信号中短暂延迟的回声。这打开了使用重力检测和范围（Gradar）绘制宇宙并进行全面的大规模紧凑物体的普查，并最终探索其内饰的前景。
Observations of a merging neutron star binary in both gravitational waves, by the Laser Interferometer Gravitational-wave Observatory (LIGO), and across the spectrum of electromagnetic radiation, by myriad telescopes, have been used to show that gravitational waves travel in vacuum at a speed that is indistinguishable from that of light to within one part in a quadrillion. However, it has long been expected mathematically that, when electromagnetic or gravitational waves travel through vacuum in a curved spacetime, the waves develop "tails" that travel more slowly. The associated signal has been thought to be undetectably weak. Here we demonstrate that gravitational waves are efficiently scattered by the curvature sourced by ordinary compact objects -- stars, white dwarfs, neutron stars, and planets -- and certain candidates for dark matter, populating the interior of the null cone. The resulting "gravitational glint" should imminently be detectable, and be recognizable (for all but planets) as briefly delayed echoes of the primary signal emanating from extremely near the direction of the primary source. This opens the prospect for using GRAvitational Detection And Ranging (GRADAR) to map the Universe and conduct a comprehensive census of massive compact objects, and ultimately to explore their interiors.
