| Title | Constraining the Halo Mass of Damped Ly alpha Absorption Systems (DLAs) at z=2-3.5 Using the Quasar-CMB Lensing Cross-correlation |
| Authors | Lin, Xiaojing Cai, Zheng Li, Yin Krolewski, Alex Ferraro, Simone |
| Affiliation | Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA Flatiron Inst, Ctr Computat Math, 162 5th Ave, New York, NY 10010 USA Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA USA |
| Keywords | INTERMEDIATE-REDSHIFT QUASARS SLOAN-DIGITAL-SKY GALAXIES MODEL ABSORBERS ABUNDANCE SPECTRA |
| Issue Date | Dec-2020 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Abstract | We study the cross-correlation of damped Ly alpha 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(DLA) is smaller than 3.1, corresponding to log(M/M(circle dot)h(-1)) <= 12.3 at a confidence of 90%. These constraints are broadly consistent with Alonso et al. and previous measurements by cross-correlation between DLAs and the Ly alpha forest (e.g., Font-Ribera et al.; Prez-Rfols et al.). Further, our results demonstrate the potential of obtaining a more precise measurement of the halo mass of the 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. |
| URI | http://hdl.handle.net/20.500.11897/602204 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/abc620 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 |
