TY - JOUR
T1 - First Identification of a CMB Lensing Signal Produced by 1.5 Million Galaxies at z∼4
T2 - Constraints on Matter Density Fluctuations at High Redshift
AU - Miyatake, Hironao
AU - Harikane, Yuichi
AU - Ouchi, Masami
AU - Ono, Yoshiaki
AU - Yamamoto, Nanaka
AU - Nishizawa, Atsushi J.
AU - Bahcall, Neta
AU - Miyazaki, Satoshi
AU - Malagón, Andrés A.Plazas
N1 - Funding Information:
The Hyper Suprime-Cam (HSC) collaboration includes the astronomical communities of Japan and Taiwan, and Princeton University. The HSC instrumentation and software were developed by the National Astronomical Observatory of Japan, the Kavli Institute for the Physics and Mathematics of the Universe, the University of Tokyo, the High Energy Accelerator Research Organization, the Academia Sinica Institute for Astronomy and Astrophysics in Taiwan, and Princeton University. Funding was contributed by the FIRST program from the Japanese Cabinet Office, the Ministry of Education, Culture, Sports, Science and Technology, the Japan Society for the Promotion of Science, Japan Science and Technology Agency, the Toray Science Foundation, the National Astronomical Observatory of Japan, the Kavli Institute for the Physics and Mathematics of the Universe, the High Energy Accelerator Research Organization, the Academia Sinica Institute for Astronomy and Astrophysics, and Princeton University. This work makes use of software developed for the Large Synoptic Survey Telescope. We thank the LSST Project for making their code available as free software at http://dm.lsst.org . This work is based [in part] on data collected at the Subaru Telescope and retrieved from the HSC data archive system, which is operated by Subaru Telescope and Astronomy Data Center at the National Astronomical Observatory of Japan. Data analysis was in part carried out with the cooperation of Center for Computational Astrophysics at the National Astronomical Observatory of Japan. The Pan-STARRS1 surveys and public science archive have been made possible through contributions by the Institute for Astronomy, the University of Hawaii, the Pan-STARRS Project Office, the Max Planck Society and its participating institutes, the Max Planck Institute for Astronomy, Heidelberg, and the Max Planck Institute for Extraterrestrial Physics, Garching, The Johns Hopkins University, Durham University, the University of Edinburgh, the Queen’s University Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network Incorporated, the National Central University of Taiwan, the Space Telescope Science Institute, the National Aeronautics and Space Administration under grant no. NNX08AR22G issued through the Planetary Science Division of the NASA Science Mission Directorate, the National Science Foundation Grant No. AST-1238877, the University of Maryland, Eotvos Lorand University, the Los Alamos National Laboratory, and the Gordon and Betty Moore Foundation. We thank Mathew Madhavacheril, Shuichiro Yokoyama, and Kiyotomo Ichiki for useful discussions. This work was supported in part by World Premier International Research Center Initiative, the Ministry of Education, Culture, Sports, Science and Technology, Japan, and the Japan Society for the Promotion of Science KAKENHI Grants No. JP15H02064, JP19H05100, JP20H01932, and JP21H00070, and Nagoya University Research Fund.
Publisher Copyright:
© 2022 authors. Published by the American Physical Society.
PY - 2022/8/5
Y1 - 2022/8/5
N2 - We report the first detection of the dark matter distribution around Lyman break galaxies (LBGs) at high redshift through the cosmic microwave background (CMB) lensing measurements with the public Planck PR3 κ map. The LBG sample consists of 1 473 106 objects with the median redshift of z∼4 that are identified in a total area of 305 deg2 observed by the Hyper Suprime-Cam Strategic Survey Program survey. After careful investigations of systematic uncertainties, such as contamination from foreground galaxies and cosmic infrared background, we obtain the significant detection of the CMB lensing signal at 5.1σ that is dominated by 2-halo term signals of the LBGs. Fitting a simple model consisting of the Navarro-Frenk-White profile and the linear-bias model, we obtain the typical halo mass of Mh=2.9-2.5+9.5×1011 h-1 M. Combining the CMB lensing and galaxy-galaxy clustering signals on the large scales, we demonstrate the first cosmological analysis at z∼4 that constrains (ωm0,σ8). We find that our constraint on σ8 is roughly consistent with the Planck cosmology, while this σ8 constraint is lower than the Planck cosmology over the 1σ level. This study opens up a new window for constraining cosmological parameters at high redshift by the combination of CMB and high-z galaxies, as well as studying the interplay between galaxy evolution and large-scale structure at such high redshift, by upcoming CMB and optical and near-infrared imaging surveys.
AB - We report the first detection of the dark matter distribution around Lyman break galaxies (LBGs) at high redshift through the cosmic microwave background (CMB) lensing measurements with the public Planck PR3 κ map. The LBG sample consists of 1 473 106 objects with the median redshift of z∼4 that are identified in a total area of 305 deg2 observed by the Hyper Suprime-Cam Strategic Survey Program survey. After careful investigations of systematic uncertainties, such as contamination from foreground galaxies and cosmic infrared background, we obtain the significant detection of the CMB lensing signal at 5.1σ that is dominated by 2-halo term signals of the LBGs. Fitting a simple model consisting of the Navarro-Frenk-White profile and the linear-bias model, we obtain the typical halo mass of Mh=2.9-2.5+9.5×1011 h-1 M. Combining the CMB lensing and galaxy-galaxy clustering signals on the large scales, we demonstrate the first cosmological analysis at z∼4 that constrains (ωm0,σ8). We find that our constraint on σ8 is roughly consistent with the Planck cosmology, while this σ8 constraint is lower than the Planck cosmology over the 1σ level. This study opens up a new window for constraining cosmological parameters at high redshift by the combination of CMB and high-z galaxies, as well as studying the interplay between galaxy evolution and large-scale structure at such high redshift, by upcoming CMB and optical and near-infrared imaging surveys.
UR - http://www.scopus.com/inward/record.url?scp=85136207779&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85136207779&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.129.061301
DO - 10.1103/PhysRevLett.129.061301
M3 - Article
C2 - 36018664
AN - SCOPUS:85136207779
SN - 0031-9007
VL - 129
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
M1 - 061301
ER -