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Title: Application of the iterative reconstruction to simulated galaxy fields

Journal Article · · Monthly Notices of the Royal Astronomical Society
ORCiD logo [1];  [2]
  1. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA, Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980-8578, Japan, Division for Interdisciplinary Advanced Research and Education, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
  2. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA
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We apply an iterative reconstruction method to galaxy mocks in redshift space obtained from N-body simulations. Comparing the two-point correlation functions for the reconstructed density field, we find that although the performance is limited by shot noise and galaxy bias compared to the matter field, the iterative method can still reconstruct the initial linear density field from the galaxy field better than the standard method both in real and in redshift space. Furthermore, the iterative method is able to reconstruct both the monopole and quadrupole more precisely, unlike the standard method. We see that as the number density of galaxies gets smaller, the performance of reconstruction gets worse due to the sparseness. However, the precision in the determination of bias (~20 per cent) hardly impacts on the reconstruction processes.

Research Organization:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0013718
OSTI ID:
1484305
Alternate ID(s):
OSTI ID: 1612025
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 482 Journal Issue: 4; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
astronomy & astrophysics
galaxies: haloes
dark matter
distance scale
large-scale structure of Universe