The linear growth of structure in the Rh = ct universe

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We use recently published redshift space distortion measurements of the cosmological growth rate, fσ8(z), to examine whether the linear evolution of perturbations in the Rh = ct cosmology is consistent with the observed development of large-scale structure. We find that these observations favour Rh = ct over the version of Λ cold dark matter (ΛCDM) 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 fσ8(z) predicted by the standard model-but not by Rh = ct-is absent in the data. When ΛCDM 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 ΛCDM. Our results strongly affirm the need for more precise measurements of fσ8(z) at all redshifts, but especially at z < 1.

Original languageEnglish (US)
Pages (from-to)1966-1976
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Volume464
Issue number2
DOIs
StatePublished - 2017

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Keywords

  • Cosmological parameters
  • Cosmology: observations
  • Cosmology: theory
  • Gravitation
  • Instabilities
  • Large-scale structure of Universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

The linear growth of structure in the Rh = ct universe. / Melia, Fulvio.

In: Monthly Notices of the Royal Astronomical Society, Vol. 464, No. 2, 2017, p. 1966-1976.

Research output: Contribution to journalArticle

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