### Abstract

This work is the continuation of the search for such a cosmological model using which the observed redshift distribution of galaxies in the sample of Broadhurst et al. (1990) turns out to be maximally periodic in the calculated spatial distance. In a previous work, Paál et al. (1992) have demonstrated that among the flat models with non-negative cosmological constant (e.e., vacuum density) the one with a vacuum: dust ratio 2:1 provides the optimum. Now we extend that study to the case of arbitrary space curvature and find equally good periodicity in a surprisingly wide range of models. By use of the dimensionless parameters Ω_{0}=ρ_{0}/ρ_{crit} and λ_{0}=Λ/3 H_{0}^{2} acceptable periodicity is obtained for all points of the parameter plane within the strip between the parallel lines 0.83Ω_{0}-0.300(Ω_{0})0+0.85(Ω_{0}0=0.83Ω_{0}+0.39 fitting to the previous optimum at Ω_{0}=1/3, λ_{0}=2/3. Any nonpositive value of λ_{0} gives bad periodicity unless the space curvature is strongly negative and Ω_{0}0

Original language | English |
---|---|

Pages (from-to) | 111-120 |

Number of pages | 10 |

Journal | Astrophysics and Space Science |

Volume | 198 |

Issue number | 1 |

DOIs | |

Publication status | Published - Dec 1992 |

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### ASJC Scopus subject areas

- Astronomy and Astrophysics
- Space and Planetary Science

### Cite this

*Astrophysics and Space Science*,

*198*(1), 111-120. https://doi.org/10.1007/BF00644305

**Cosmological parameters and redshift periodicity.** / Holba, Ágnes; Horváth, I.; Lukács, B.; Paál, G.

Research output: Contribution to journal › Article

*Astrophysics and Space Science*, vol. 198, no. 1, pp. 111-120. https://doi.org/10.1007/BF00644305

}

TY - JOUR

T1 - Cosmological parameters and redshift periodicity

AU - Holba, Ágnes

AU - Horváth, I.

AU - Lukács, B.

AU - Paál, G.

PY - 1992/12

Y1 - 1992/12

N2 - This work is the continuation of the search for such a cosmological model using which the observed redshift distribution of galaxies in the sample of Broadhurst et al. (1990) turns out to be maximally periodic in the calculated spatial distance. In a previous work, Paál et al. (1992) have demonstrated that among the flat models with non-negative cosmological constant (e.e., vacuum density) the one with a vacuum: dust ratio 2:1 provides the optimum. Now we extend that study to the case of arbitrary space curvature and find equally good periodicity in a surprisingly wide range of models. By use of the dimensionless parameters Ω0=ρ0/ρcrit and λ0=Λ/3 H02 acceptable periodicity is obtained for all points of the parameter plane within the strip between the parallel lines 0.83Ω0-0.300(Ω0)0+0.85(Ω00=0.83Ω0+0.39 fitting to the previous optimum at Ω0=1/3, λ0=2/3. Any nonpositive value of λ0 gives bad periodicity unless the space curvature is strongly negative and Ω00

AB - This work is the continuation of the search for such a cosmological model using which the observed redshift distribution of galaxies in the sample of Broadhurst et al. (1990) turns out to be maximally periodic in the calculated spatial distance. In a previous work, Paál et al. (1992) have demonstrated that among the flat models with non-negative cosmological constant (e.e., vacuum density) the one with a vacuum: dust ratio 2:1 provides the optimum. Now we extend that study to the case of arbitrary space curvature and find equally good periodicity in a surprisingly wide range of models. By use of the dimensionless parameters Ω0=ρ0/ρcrit and λ0=Λ/3 H02 acceptable periodicity is obtained for all points of the parameter plane within the strip between the parallel lines 0.83Ω0-0.300(Ω0)0+0.85(Ω00=0.83Ω0+0.39 fitting to the previous optimum at Ω0=1/3, λ0=2/3. Any nonpositive value of λ0 gives bad periodicity unless the space curvature is strongly negative and Ω00

UR - http://www.scopus.com/inward/record.url?scp=34249835562&partnerID=8YFLogxK

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U2 - 10.1007/BF00644305

DO - 10.1007/BF00644305

M3 - Article

AN - SCOPUS:34249835562

VL - 198

SP - 111

EP - 120

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

SN - 0004-640X

IS - 1

ER -