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arXiv 1903.04730astro-ph.CO
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引力波宇宙学和天体物理学与大光谱星系巡天

Gravitational wave cosmology and astrophysics with large spectroscopic galaxy surveys

Antonella Palmese, Or Graur, James T. Annis, Segev BenZvi, Eleonora Di Valentino, Juan Garcia-Bellido, Satya Gontcho A Gontcho, Ryan Keeley, Alex Kim, Ofer Laha… 展开作者

Antonella Palmese, Or Graur, James T. Annis, Segev BenZvi, Eleonora Di Valentino, Juan Garcia-Bellido, Satya Gontcho A Gontcho, Ryan Keeley, Alex Kim, Ofer Lahav, Samaya Nissanke, Kerry Paterson, Masao Sako, Arman Shafieloo, Yu-Dai Tsai

摘要:

在接下来的十年里,人们将从数百个双星螺旋事件中观测到引力波。当宿主星系的红移已知时,这些事件可以被用作“标准警报器”,对宇宙的膨胀率敏感。从标准塞壬测量哈勃常数$H_0$可以独立于其他宇宙学探测器进行,并且在$z<0.1$发生的事件将允许我们独立于宇宙学模型推断$H_0$。下一代分光星系巡天将在减少$H_0$与标准塞壬的系统不确定性方面发挥关键作用,特别是对于许多没有电磁对应物的“暗塞壬”。结合大型光谱数据集,标准警报器与EM对应物预计将在未来十年内将$H_0$限制为$\sim 1-2\%$精度。这与迄今为止获得的$H_0$的最佳估计值具有竞争力,并将有助于阐明现有测量之间的当前紧张关系。关于发生引力波事件的星系的信息也将揭示致密天体双星的起源和演化。

英文摘要:

During the next decade, gravitational waves will be observed from hundreds of binary inspiral events. When the redshifts of the host galaxies are known, these events can be used as `standard sirens', sensitive to the expansion rate of the Universe. Measurements of the Hubble constant $H_0$ from standard sirens can be done independently of other cosmological probes, and events occurring at $z<0.1$ will allow us to infer $H_0$ independently of cosmological models. The next generation of spectroscopic galaxy surveys will play a crucial role in reducing systematic uncertainties in $H_0$ from standard sirens, particularly for the numerous `dark sirens' which do not have an electromagnetic counterpart. In combination with large spectroscopic data sets, standard sirens with an EM counterpart are expected to constrain $H_0$ to $\sim 1-2\%$ precision within the next decade. This is competitive with the best estimates of $H_0$ obtained to date and will help illuminate the current tension between existing measurements. Information on the galaxies that host the gravitational wave events will also shed light on the origin and evolution of compact object binaries.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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