Cosmological parameter estimation from CMB and X-ray cluster after Planck

Hu, Jian-Wei; Cai, Rong-Gen; Guo, Zong-Kuan; Hu, Bin

doi:10.1088/1475-7516/2014/05/020

Title: Cosmological parameter estimation from CMB and X-ray cluster after Planck

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Abstract

We investigate constraints on cosmological parameters in three 8-parameter models with the summed neutrino mass as a free parameter, by a joint analysis of CCCP X-ray cluster data, the newly released Planck CMB data as well as some external data sets including baryon acoustic oscillation measurements from the 6dFGS, SDSS DR7 and BOSS DR9 surveys, and Hubble Space Telescope H{sub 0} measurement. We find that the combined data strongly favor a non-zero neutrino masses at more than 3σ confidence level in these non-vanilla models. Allowing the CMB lensing amplitude A{sub L} to vary, we find A{sub L} > 1 at 3σ confidence level. For dark energy with a constant equation of state w, we obtain w < −1 at 3σ confidence level. The estimate of the matter power spectrum amplitude σ{sub 8} is discrepant with the Planck value at 2σ confidence level, which reflects some tension between X-ray cluster data and Planck data in these non-vanilla models. The tension can be alleviated by adding a 9% systematic shift in the cluster mass function.

Authors:

Hu, Jian-Wei; Cai, Rong-Gen; Guo, Zong-Kuan ^[1]; Hu, Bin ^[2]

State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190 (China)
Instituut-Lorentz for Theoretical Physics, Universiteit Leiden, 2333 CA Leiden (Netherlands)

Publication Date:: Thu May 01 00:00:00 EDT 2014

OSTI Identifier:: 22373571

Resource Type:: Journal Article

Journal Name:: Journal of Cosmology and Astroparticle Physics

Additional Journal Information:: Journal Volume: 2014; Journal Issue: 05; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMPLITUDES; BARYONS; EQUATIONS OF STATE; MASS; NEUTRINOS; NONLUMINOUS MATTER; OSCILLATIONS; SPACE; SPECTRA; TELESCOPES; X RADIATION

Citation Formats


                    Hu, Jian-Wei, Cai, Rong-Gen, Guo, Zong-Kuan, and Hu, Bin. Cosmological parameter estimation from CMB and X-ray cluster after Planck.  United States: N. p., 2014. 
        Web.  doi:10.1088/1475-7516/2014/05/020.

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                    Hu, Jian-Wei, Cai, Rong-Gen, Guo, Zong-Kuan, & Hu, Bin. Cosmological parameter estimation from CMB and X-ray cluster after Planck.  United States.  https://doi.org/10.1088/1475-7516/2014/05/020

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                    Hu, Jian-Wei, Cai, Rong-Gen, Guo, Zong-Kuan, and Hu, Bin. 2014.  
        "Cosmological parameter estimation from CMB and X-ray cluster after Planck".  United States.  https://doi.org/10.1088/1475-7516/2014/05/020.

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@article{osti_22373571,

  title        = {Cosmological parameter estimation from CMB and X-ray cluster after Planck},

  author       = {Hu, Jian-Wei and Cai, Rong-Gen and Guo, Zong-Kuan and Hu, Bin},

  abstractNote = {We investigate constraints on cosmological parameters in three 8-parameter models with the summed neutrino mass as a free parameter, by a joint analysis of CCCP X-ray cluster data, the newly released Planck CMB data as well as some external data sets including baryon acoustic oscillation measurements from the 6dFGS, SDSS DR7 and BOSS DR9 surveys, and Hubble Space Telescope H{sub 0} measurement. We find that the combined data strongly favor a non-zero neutrino masses at more than 3σ confidence level in these non-vanilla models. Allowing the CMB lensing amplitude A{sub L} to vary, we find A{sub L} > 1 at 3σ confidence level. For dark energy with a constant equation of state w, we obtain w < −1 at 3σ confidence level. The estimate of the matter power spectrum amplitude σ{sub 8} is discrepant with the Planck value at 2σ confidence level, which reflects some tension between X-ray cluster data and Planck data in these non-vanilla models. The tension can be alleviated by adding a 9% systematic shift in the cluster mass function.},

  doi          = {10.1088/1475-7516/2014/05/020},

  url          = {https://www.osti.gov/biblio/22373571},
  journal      = {Journal of Cosmology and Astroparticle Physics},

  issn         = {1475-7516},

  number       = 05,

  volume       = 2014,

  place        = {United States},

  year         = {Thu May 01 00:00:00 EDT 2014},

  month        = {Thu May 01 00:00:00 EDT 2014}

}

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