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    The linear growth of structure in the Rh = ct universe

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    Author
    Melia, Fulvio
    Affiliation
    Univ Arizona, Dept Phys, Program Appl Math
    Univ Arizona, Dept Astron
    Issue Date
    2017-01-11
    Keywords
    gravitation
    instabilities
    cosmological parameters
    cosmology: observations
    cosmology: theory
    large-scale structure of Universe
    
    Metadata
    Show full item record
    Publisher
    OXFORD UNIV PRESS
    Citation
    The linear growth of structure in the Rh = ct universe 2017, 464 (2):1966 Monthly Notices of the Royal Astronomical Society
    Journal
    Monthly Notices of the Royal Astronomical Society
    Rights
    © 2016 The Author. Published by Oxford University Press on behalf of the Royal Astronomical Society.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We use recently published redshift space distortion measurements of the cosmological growth rate, f sigma(8)(z), to examine whether the linear evolution of perturbations in the R-h = ct cosmology is consistent with the observed development of large-scale structure. We find that these observations favour R-h = ct over the version of Lambda cold dark matter (Lambda CDM) optimized with the joint analysis of Planck and linear growth rate data, particularly in the redshift range 0 < z < 1, where a significant curvature in the functional form of f sigma(8)(z) predicted by the standard model-but not by R-h = ct-is absent in the data. When Lambda CDM is optimized using solely the growth rate measurements; however, the two models fit the observations equally well though, in this case, the low-redshift measurements find a lower value for the fluctuation amplitude than is expected in Planck Lambda CDM. Our results strongly affirm the need for more precise measurements of f sigma(8)(z) at all redshifts, but especially at z < 1.
    ISSN
    0035-8711
    1365-2966
    DOI
    10.1093/mnras/stw2493
    Version
    Final published version
    Sponsors
    Chinese Academy of Sciences Visiting Professorships for Senior International Scientists [2012T1J0011]
    Additional Links
    https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw2493
    ae974a485f413a2113503eed53cd6c53
    10.1093/mnras/stw2493
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