论文标题
GWTC-3的宇宙学和修饰的重力与深色警报器
Cosmology and modified gravity with dark sirens from GWTC-3
论文作者
论文摘要
我们使用与银河系目录的相关性，从第三引力波瞬时目录GWTC-3获得了哈勃参数和参数$ξ_0$的最新测量结果，这些测量值是从第三引力波瞬时目录GWTC-3获得的。 The latter leads to the tightest bound on $Ξ_0$ so far, i.e. $Ξ_0 = 1.2^{+0.7}_{-0.7}$ with a flat prior on $Ξ_0$, and $Ξ_0 = 1.0^{+0.4}_{-0.8}$ with a prior uniform in $\logΞ_0$ (Max posterior and $68\%$ HDI）。 $ H_0 $的测量由单个明亮的警笛GW170817主导，导致$ h_0 = 67^{+9} _ { - 6} \，\ rm km km \，s^{ - 1} \，与Galaxy Catalog结合时。
We present the latest measurements of the Hubble parameter and of the parameter $Ξ_0$ describing modified gravitational wave propagation, obtained from the third gravitational wave transient catalog, GWTC-3, using the correlation with galaxy catalogs and information from the source-frame mass distribution of binary black holes. The latter leads to the tightest bound on $Ξ_0$ so far, i.e. $Ξ_0 = 1.2^{+0.7}_{-0.7}$ with a flat prior on $Ξ_0$, and $Ξ_0 = 1.0^{+0.4}_{-0.8}$ with a prior uniform in $\logΞ_0$ (Max posterior and $68\%$ HDI). The measurement of $H_0$ is dominated by the single bright siren GW170817, resulting in $H_0=67^{+9}_{-6} \, \rm km \, s^{-1} \, Mpc$ when combined with the galaxy catalog.
