Probing dynamical spacetimes with gravitational waves
Probing dynamical spacetimes with gravitational waves
复制标题
用引力波探测动态时空
DOI：
10.1007/978-3-642-41992-8_27
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
C. Broeck
中科院分区：
文献类型：
--
作者：
C. Broeck
这十年将看到第一次直接探测引力波的天文台，如先进的LIGO和处女座。其中主要的来源是双星中子星和黑洞的合并，它们是动力时空的理想探测器。这将预示着一个新的时代，在引力的实证研究。我们将第一次接触到真正的强场动力学，在那里，量子引力的低能印记很可能会出现。此外，我们将能够寻找那些可能只在大距离尺度上才能知道它们存在的物体，例如引力波从源到观测者必须穿越的物体。最后，合并双星可以用作宇宙距离标记，以研究宇宙的大尺度结构和演化。随着先进探测器时代的快速临近，正在开发具体的数据分析算法，以寻找从合并的二进制信号中偏离广义相对论，考虑到嘈杂的探测器输出以及大多数源将接近可探测性阈值的预期。类似地，已经提出了几种实用的方法来将它们用于宇宙学。我们解释了现有技术，包括仍然需要克服的障碍，以便最佳地利用将被检测到的信号。虽然重点将放在第二代天文台上，但我们也将讨论未来第三代地面设施（如爱因斯坦望远镜）以及天基探测器可以完成的一些科学。
This decade will see the rst direct detections of gravitational waves by observatories such as Advanced LIGO and Virgo. Among the prime sources are coalescences of binary neutron stars and black holes, which are ideal probes of dynamical spacetime. This will herald a new era in the empirical study of gravitation. For the rst time, we will have access to the genuinely strong-eld dynamics, where low-energy imprints of quantum gravity may well show up. In addition, we will be able to search for eects which might only make their presence known at large distance scales, such as the ones that gravitational waves must traverse in going from source to observer. Finally, coalescing binaries can be used as cosmic distance markers, to study the large-scale structure and evolution of the Universe. With the advanced detector era fast approaching, concrete data analysis algorithms are being developed to look for deviations from general relativity in signals from coalescing binaries, taking into account the noisy detector output as well as the expectation that most sources will be near the threshold of detectability. Similarly, several practical methods have been proposed to use them for cosmology. We explain the state of the art, including the obstacles that still need to be overcome in order to make optimal use of the signals that will be detected. Although the emphasis will be on second-generation observatories, we will also discuss some of the science that could be done with future third-generation ground-based facilities such as Einstein Telescope, as well as with space-based detectors.
影响因子：
8.6
作者：
Ajith, P.;Hannam, M.;Seiler, J.
通讯作者：
Seiler, J.