论文标题
双源镜头探测高红移宇宙学
Double Source Lensing Probing High Redshift Cosmology
论文作者
论文摘要
双源镜头带有两个由同一前景星系镜头的源，涉及每个源与镜头之间的距离，因此是宇宙远离观察者的探针。双源距离比还降低了对镜头模型的敏感性，并且与标准距离探针具有良好的互补性。我们表明，在高红移$ z> 1 $上使用此技术，可以通过欧几里得卫星和其他调查的数据来启用，都可以在$ W_0 $ - $ W_A $和REDSHIFT BINNED BINNED密度方面提供有关暗能量的见解。我们从256个具有中等质量的宇宙微波背景和超新星数据的双源系统组合的组合中找到了245个功绩的暗能量图。相反，我们可以在$ z = 1.1 $ -5之间使用五个红移垃圾箱，我们可以检测到深色能量密度至$ z \ oft of yout5 $，或进行量子范围在31 $σ$和2.5 $σ$之间的测量值。
Double source lensing, with two sources lensed by the same foreground galaxy, involves the distance between each source and the lens and hence is a probe of the universe away from the observer. The double source distance ratio also reduces sensitivity to the lens model and has good complementarity with standard distance probes. We show that using this technique at high redshifts $z>1$, to be enabled by data from the Euclid satellite and other surveys, can give insights on dark energy, both in terms of $w_0$-$w_a$ and redshift binned density. We find a dark energy figure of merit of 245 from combination of 256 double source systems with moderate quality cosmic microwave background and supernova data. Using instead five redshift bins between $z=1.1$-5, we could detect the dark energy density out to $z\approx5$, or make measurements ranging between 31$σ$ and 2.5$σ$ of its values in the bins.
