Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    nIFTy cosmology: Galaxy/halo mock catalogue comparison project on clustering statistics

    Access Status
    Fulltext not available
    Authors
    Chuang, C.
    Zhao, C.
    Prada, F.
    Munari, E.
    Avila, S.
    Izard, A.
    Kitaura, F.
    Manera, M.
    Monaco, P.
    Murray, Steven
    Knebe, A.
    Scóccola, C.
    Yepes, G.
    Garcia-Bellido, J.
    Marín, F.
    Müller, V.
    Skibba, R.
    Crocce, M.
    Fosalba, P.
    Gottlöber, S.
    Klypin, A.
    Power, C.
    Tao, C.
    Turchaninov, V.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Chuang, C. and Zhao, C. and Prada, F. and Munari, E. and Avila, S. and Izard, A. and Kitaura, F. et al. 2015. nIFTy cosmology: Galaxy/halo mock catalogue comparison project on clustering statistics. Monthly Notices of the Royal Astronomical Society. 452 (1): pp. 686-700.
    Source Title
    Monthly Notices of the Royal Astronomical Society
    DOI
    10.1093/mnras/stv1289
    ISSN
    0035-8711
    School
    Curtin Institute of Radio Astronomy (Physics)
    URI
    http://hdl.handle.net/20.500.11937/56367
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a comparison of major methodologies of fast generating mock halo or galaxy catalogues. The comparison is done for two-point (power spectrum and two-point correlation function in real and redshift space), and the three-point clustering statistics (bispectrum and three-point correlation function). The reference catalogues are drawn from the BigMultiDark N-body simulation. Both friend-of-friends (including distinct haloes only) and spherical overdensity (including distinct haloes and subhalos) catalogues have been used with the typical number density of a large volume galaxy surveys. We demonstrate that a proper biasing model is essential for reproducing the power spectrum at quasi-linear and even smaller scales. With respect to various clustering statistics, a methodology based on perturbation theory and a realistic biasing model leads to very good agreement with N-body simulations. However, for the quadrupole of the correlation function or the power spectrum, only the method based on semi-N-body simulation could reach high accuracy (1 per cent level) at small scales, i.e. r < 25 h < sup > -1 < /sup > Mpc or k > 0.15 h Mpc < sup > -1 < /sup > . Full N-body solutions will remain indispensable to produce reference catalogues. Nevertheless, we have demonstrated that the more efficient approximate solvers can reach a few per cent accuracy in terms of clustering statistics at the scales interesting for the large-scale structure analysis. This makes them useful for massive production aimed at covariance studies, to scan large parameter spaces, and to estimate uncertainties in data analysis techniques, such as baryon acoustic oscillation reconstruction, redshift distortion measurements, etc.

    Related items

    Showing items related by title, author, creator and subject.

    • HALOGEN: A tool for fast generation of mock halo catalogues
      Avila, S.; Murray, Steven; Knebe, A.; Power, C.; Robotham, A.; Garcia-Bellido, J. (2015)
      © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a simple method of generating approximate synthetic halo catalogues: HALOGEN. This method uses a combination ...
    • A LOFAR study of non-merging massive galaxy clusters
      Savini, F.; Bonafede, A.; Brüggen, M.; Rafferty, D.; Shimwell, T.; Botteon, A.; Brunetti, G.; Intema, Huib ; Wilber, A.; Cassano, R.; Vazza, F.; Van Weeren, R.; Cuciti, V.; De Gasperin, F.; Röttgering, H.; Sommer, M.; Bîrzan, L.; Drabent, A. (2019)
      Centrally located diffuse radio emission has been observed in both merging and non-merging galaxy clusters. Depending on their morphology and size, we distinguish between giant radio haloes, which occur predominantly in ...
    • Radio haloes in Sunyaev-Zel'dovich-selected clusters of galaxies: The making of a halo?
      Bonafede, A.; Intema, Hubertus; Brüggen, M.; Vazza, F.; Basu, K.; Sommer, M.; Ebeling, H.; De Gasperin, F.; Röttgering, H.; Van Weeren, R.; Cassano, R. (2015)
      Radio haloes are synchrotron radio sources detected in some massive galaxy clusters. Their size of Mpc indicates that (re)acceleration processes are taking place in the host cluster. X-ray catalogues of galaxy clusters ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.