论文标题

精确的精度宇宙学,带有红移未知的重力波源

Accurate precision Cosmology with redshift unknown gravitational wave sources

论文作者

Mukherjee, Suvodip, Wandelt, Benjamin D., Nissanke, Samaya M., Silvestri, Alessandra

论文摘要

重力波可以准确地测量到源到源的光度距离,但是除非质量和红移之间的堕落性,否则无法提供源红移。这使得必须独立推断来源的红移以衡量宇宙的扩展历史。我们表明,通过使用已知的红移星系利用重力波源的聚类量表,我们可以从红移未知的引力波源中推断出膨胀历史。通过使用具有先进的Ligo设计敏感性从重力波检测器网络中检测到的未知红移的引力波源,我们将能够获得对局部哈勃常数的准确,精确的测量,即宇宙的扩展历史,以及引力波偏置参数,并捕获了带有重力波源的分配,以促进了分布的分布。当我们展示其在低红移引力波中的应用时,该技术也将适用于可从激光干涉仪空间天线(LISA),宇宙探险器(CE)和爱因斯坦望远镜(ET)检测到的高红移引力波源。此外,该方法还适用于具有未知或光度红移的超新星和快速无线电爆发的样品。

Gravitational waves can provide an accurate measurement of the luminosity distance to the source, but cannot provide the source redshift unless the degeneracy between mass and redshift can be broken. This makes it essential to infer the redshift of the source independently to measure the expansion history of the Universe. We show that by exploiting the clustering scale of the gravitational wave sources with galaxies of known redshift, we can infer the expansion history from redshift unknown gravitational wave sources. By using gravitational wave sources of unknown redshift that are detectable from the network of gravitational wave detectors with Advanced LIGO design sensitivity, we will be able to obtain accurate and precise measurements of the local Hubble constant, the expansion history of the universe, and the gravitational wave bias parameter, which captures the distribution of gravitational wave sources with respect to the redshift tracer distribution. While we showcase its application to low redshift gravitational waves, this technique will be applicable also to the high redshift gravitational wave sources detectable from Laser Interferometer Space Antenna (LISA), Cosmic Explorer (CE), and Einstein Telescope (ET). Moreover, this method will also be applicable to samples of supernovae and fast radio bursts with unknown or photometric redshifts.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源