论文标题
使用Quasar-CMB透镜互相关，将阻尼LY $α$吸收系统（DLAS）限制为$ z = 2-3.5 $的光环质量
Constraining the Halo Mass of Damped Ly$α$ Absorption Systems (DLAs) at $z=2-3.5$ using the Quasar-CMB Lensing Cross-correlation
论文作者
论文摘要
我们使用最新更新的DLA目录和Planck 2018 CMB镜头收敛场研究了阻尼LY $α$系统（DLAS）及其背景类星体的互相关。我们的测量表明，DLA偏置$ b _ {\ rm dla} $小于$ 3.1 $，对应于$ \ log（m/m_ \ odot h^{ - 1}）\ leq 12.3 $，以$ 90 \％$的信心。这些约束与Alonso等人广泛一致。 （2018年）和以前通过DLA与LY $α$森林之间的互相关测量（例如Font-Ribera等人，2012; Perez-Rafols等人，2018年）。此外，我们的结果表明，使用下一代CMB实验具有较高的角度分辨率，可以更精确地测量高红移源的光晕质量。我们分析的基于Python的代码和数据产品可在https://github.com/littlelin1999/cmb-lensingxdla上获得。
We study the cross correlation of damped Ly$α$ systems (DLAs) and their background quasars, using the most updated DLA catalog and the Planck 2018 CMB lensing convergence field. Our measurement suggests that the DLA bias $b_{\rm DLA}$ is smaller than $3.1$, corresponding to $\log(M/M_\odot h^{-1})\leq 12.3$ at a confidence of $90\%$. These constraints are broadly consistent with Alonso et al. (2018) and previous measurements by cross-correlation between DLAs and the Ly$α$ forest (e.g. Font-Ribera et al. 2012; Perez-Rafols et al. 2018). Further, our results demonstrate the potential of obtaining a more precise measurement of the halo mass of high-redshift sources using next generation CMB experiments with a higher angular resolution. The python-based codes and data products of our analysis are available at https://github.com/LittleLin1999/CMB-lensingxDLA.
