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Title: Full-sky Gravitational Lensing Simulation for Large-area Galaxy Surveys and Cosmic Microwave Background Experiments

We present 108 full-sky gravitational lensing simulation data sets generated by performing multiple-lens plane ray-tracing through high-resolution cosmological N-body simulations. The data sets include full-sky convergence and shear maps from redshifts z = 0.05 to 5.3 at intervals of $$150\,{h}^{-1}\mathrm{Mpc}$$ comoving radial distance (corresponding to a redshift interval of $${\rm{\Delta }}z\simeq 0.05$$ at the nearby universe), enabling the construction of a mock shear catalog for an arbitrary source distribution up to z = 5.3. The dark matter halos are identified from the same N-body simulations with enough mass resolution to resolve the host halos of the Sloan Digital Sky Survey (SDSS) CMASS and luminous red galaxies (LRGs). Angular positions and redshifts of the halos are provided by a ray-tracing calculation, enabling the creation of a mock halo catalog to be used for galaxy–galaxy and cluster–galaxy lensing. The simulation also yields maps of gravitational lensing deflections for a source redshift at the last scattering surface, and we provide 108 realizations of lensed cosmic microwave background (CMB) maps in which the post-Born corrections caused by multiple light scattering are included. We present basic statistics of the simulation data, including the angular power spectra of cosmic shear, CMB temperature and polarization anisotropies, galaxy–galaxy lensing signals for halos, and their covariances. The angular power spectra of the cosmic shear and CMB anisotropies agree with theoretical predictions within 5% up to $${\ell }=3000$$ (or at an angular scale $$\theta \gt 0.5$$ arcmin). The simulation data sets are generated primarily for the ongoing Subaru Hyper Suprime-Cam survey, but are freely available for download at http://cosmo.phys.hirosaki-u.ac.jp/takahasi/allsky_raytracing/.
Authors:
ORCiD logo [1] ;  [2] ;  [2] ;  [3] ; ORCiD logo [4] ; ORCiD logo [5] ;  [1]
  1. Hirosaki Univ. (Japan). Faculty of Science and Technology
  2. National Astronomical Observatory of Japan, Mitaka, Tokyo (Japan)
  3. Stanford Univ., CA (United States). Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
  4. Univ. of Tokyo (Japan). Inst. for Advanced Study (UTIAS), Kavli Inst. for the Physics and Mathematics of the Universe (WPI); Japan Science and Technology Agency (JST), Saitama (Japan). Core Research for Evolutional Science and Technology (CREST)
  5. Univ. of Tokyo (Japan). Dept. of Physics, School of Science
Publication Date:
Grant/Contract Number:
AC02-76SF00515; JP-MJCR1414
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 850; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE; Japan Science and Technology Agency (JST)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic background radiation; gravitational lensing: weak; large-scale structure of universe
OSTI Identifier:
1410508
Alternate Identifier(s):
OSTI ID: 1418205