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arXiv 2604.25307astro-ph.COastro-ph.IMgr-qc
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从爱因斯坦望远镜的模拟引力波数据中恢复宇宙学参数

Recovering cosmological parameters from the mock gravitational wave data of the Einstein Telescope

Astronomical Observatory, University of Warsaw(华沙大学天文台)

Pinaki Roy, Tomasz Bulik

AI总结:

本文研究了利用爱因斯坦望远镜的模拟引力波事件目录恢复哈勃常数和物质密度参数的方法,展示了通过双黑洞并合的内在啁啾质量谱推断哈勃常数的有效性。

摘要:

爱因斯坦望远镜(ET)是第三代引力波(GW)探测器,其灵敏度比先进LIGO高十倍。它将能够观测到红移高达10的恒星质量双黑洞并合,这对宇宙学图谱尤其有用。我们生成了爱因斯坦望远镜的模拟引力波事件目录,并展示了恢复哈勃常数(H₀)或物质密度参数(Ω_m)的可行性。我们提出了一种简单、有效且快速的技术,利用双黑洞并合的内在啁啾质量谱推断H₀(或Ω_m),并假设标准宇宙学模型检验该方法的有效性。如果仅需约束H₀,发现至少需要一年的ET观测才能达到1%的不确定性。在相同观测时间内,Ω_m可被约束到4%的不确定性。当ET作为独立仪器运行时,其探测的引力波谱警报可约束哈勃常数。

英文摘要:

Einstein Telescope (ET) is a third-generation gravitational wave (GW) detector with tenfold better sensitivity compared to the advanced LIGO detectors. It will be capable of observing copious stellar mass binary black hole mergers up to a redshift of 10 which will make it especially useful for cosmography. We generate a mock gravitational wave event catalog for the Einstein Telescope and show the recoverability of either the Hubble constant ($H_0$) or the matter density parameter ($Ω_{\rm m}$). We present a simple, effective and fast technique for inferring $H_0$ (or $Ω_{\rm m}$) using the intrinsic chirp mass spectrum of black hole binaries, and investigate the efficacy of the method assuming the standard model of cosmology. If only $H_0$ has to be constrained, we find that at least one year of ET's observation will be required to achieve 1% uncertainty. With the same amount of observation, $Ω_{\rm m}$ can be constrained to within 4% uncertainty. With ET operating as a standalone instrument, we show that the GW spectral sirens detected by it can constrain the Hubble constant.

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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