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arXiv 1703.04151astro-ph.COgr-qc
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来自未来透镜引力波和电磁信号的精确宇宙学

Precision cosmology from future lensed gravitational wave and electromagnetic signals

Kai Liao, Xi-Long Fan, Xu-Heng Ding, Marek Biesiada, Zong-Hong Zhu

摘要:

引力波宇宙学的标准siren方法呼吁通过来自螺旋双致密双星的波形信号直接估算光度距离,特别是那些具有提供红移的电磁对应物的双星。它受到应变幅度校准不确定性的限制,并依赖于波形的精细细节。预计爱因斯坦望远镜每年将探测到$10^4-10^5$引力波,其中$50-100$将被透镜化。在这里,我们报告了一个波形独立的战略,以实现精确的宇宙学相结合的精确测量的时间延迟,从强透镜引力波信号的图像和红移观察到的电磁域。我们证明,只有10个这样的系统可以提供一个哈勃常数的不确定性$0.68\%$为一个平坦的拉姆达冷暗物质宇宙在第三代地基探测器的时代。

英文摘要:

The standard siren approach of gravitational wave cosmology appeals to the direct luminosity distance estimation through the waveform signals from inspiralling double compact binaries, especially those with electromagnetic counterparts providing redshifts. It is limited by the calibration uncertainties in strain amplitude and relies on the fine details of the waveform. The Einstein Telescope is expected to produce $10^4-10^5$ gravitational wave detections per year, $50-100$ of which will be lensed. Here we report a waveform-independent strategy to achieve precise cosmography by combining the accurately measured time delays from strongly lensed gravitational wave signals with the images and redshifts observed in the electromagnetic domain. We demonstrate that just 10 such systems can provide a Hubble constant uncertainty of $0.68\%$ for a flat Lambda Cold Dark Matter universe in the era of third generation ground-based detectors.

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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