论文标题

重力波天体物理学的准确波形模型:分析相对性的协同方法

Accurate waveform models for gravitational-wave astrophysics: synergetic approaches from analytical relativity

论文作者

Antonelli, Andrea

论文摘要

引力波(GW)天体物理学是一个全面的领域。自2015年9月14日从二进制黑洞对GWS进行具有里程碑意义的GW检测以来,Ligo-Virgo合作案报道了几种紧凑的对象二进制文件。此类事件具有天体物理和宇宙学信息,从对黑洞和中子星的形成方式的理解,中子星的组成,宇宙的扩展方式以及允许在高度动态的强场状态中测试一般相对论。 GW天​​体物理学的目标是尽可能准确提取此类信息。但是,只有在用于检测和分析GWS的工具和技术已经足够先进的情况下,才有可能。 GW搜索的一个关键方面是波形模型,它封装了我们对一组参数下重力辐射的最佳预测,并且需要与数据交叉以提取GW信号。波形必须非常准确,以避免数据中缺少重要的物理,这可能是回答GW天体物理学基本问题的关键。当前的Ligo-Virgo探测器的持续改进,下一代地面探测器的发展,例如爱因斯坦望远镜或宇宙探险家,以及激光干涉仪空间天线(LISA)的开发,需求准确的波形模型。 [简略。]

Gravitational-wave (GW) astrophysics is a field in full blossom. Since the landmark detection of GWs from a binary black hole on September 14th 2015, several compact-object binaries have been reported by the LIGO-Virgo collaboration. Such events carry astrophysical and cosmological information ranging from an understanding of how black holes and neutron stars are formed, what neutron stars are composed of, how the Universe expands, and allow testing general relativity in the highly-dynamical strong-field regime. It is the goal of GW astrophysics to extract such information as accurately as possible. Yet, this is only possible if the tools and technology used to detect and analyze GWs are advanced enough. A key aspect of GW searches are waveform models, which encapsulate our best predictions for the gravitational radiation under a certain set of parameters, and that need to be cross-correlated with data to extract GW signals. Waveforms must be very accurate to avoid missing important physics in the data, which might be the key to answer the fundamental questions of GW astrophysics. The continuous improvements of the current LIGO-Virgo detectors, the development of next-generation ground-based detectors such as the Einstein Telescope or the Cosmic Explorer, as well as the development of the Laser Interferometer Space Antenna (LISA), demand accurate waveform models. [Abridged.]

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