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arXiv 1909.01400astro-ph.COgr-qchep-exhep-ph
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类星体X射线和UV通量、重子声学振荡和哈勃参数测量对宇宙学模型参数的限制

Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters

Narayan Khadka, Bharat Ratra

摘要:

我们使用Risaliti & Lusso(2015)汇编的808个类星体(QSO)在红移范围$0.061 \leq z \leq 6.28$内的X射线和紫外通量测量,单独和结合重子声学振荡(BAO)和哈勃参数[ $H(z)$ ]测量,以约束六个宇宙学模型中的宇宙学参数。类星体的数据约束明显弱于,但一致,从$H(z)$ + BAO数据。对类星体+ $H(z)$ + BAO数据的联合分析与目前的标准模型--空间平坦的$Λ$ CDM一致,但对封闭的空间超曲面和动力学暗能量有一定的支持。

英文摘要:

We use the Risaliti & Lusso (2015) compilation of 808 X-ray and UV flux measurements of quasars (QSOs) in the redshift range $0.061 \leq z \leq 6.28$, alone and in conjuction with baryon acoustic oscillation (BAO) and Hubble parameter [$H(z)$] measurements, to constrain cosmological parameters in six cosmological models. The QSO data constraints are significantly weaker than, but consistent with, those from the $H(z)$ + BAO data. A joint analysis of the QSO + $H(z)$ + BAO data is consistent with the current standard model, spatially-flat $Λ$CDM, but mildly favors closed spatial hypersurfaces and dynamical dark energy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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