CAJ | 학술논문

使用径向重子声学振荡(RBAO)测量遥远的 Ia型超新星(SNe Ia)、观测哈勃参量数据(OHD)和宇宙微波背景(CMB)位移参数数据来限制ΛCDM和 XCDM宇宙的宇宙学参量,进一步检查了 OHD和 SNe Ia 数据对宇宙学的约束作用.我们对似然函数的归化哈勃参数h进行了边缘化,即积分概率密度P∝e-Χ2/2,以在Ωm-ΩΛ平面获得最佳的拟合结果和置信区域.依据ΛCDM和 XCDM模型的组合分析,我们发现在置信区域为68.3%、95.4%和99.7%的置信水平上,OHD+RBAO+CMB数据和 SNe Ia+RBAO+CMB数据符合得很好.随着越来越多的 OHD数据的获得,我们或许在将来可以使用 OHD数据代替 SNe Ia数据来限制宇宙学参量.
사용경향중자성학진탕(RBAO)측량요원적 Ia형초신성(SNe Ia)、관측합발삼량수거(OHD)화우주미파배경(CMB)위이삼수수거래한제ΛCDM화 XCDM우주적우주학삼량,진일보검사료 OHD화 SNe Ia 수거대우주학적약속작용.아문대사연함수적귀화합발삼수h진행료변연화,즉적분개솔밀도P∝e-Χ2/2,이재Ωm-ΩΛ평면획득최가적의합결과화치신구역.의거ΛCDM화 XCDM모형적조합분석,아문발현재치신구역위68.3%、95.4%화99.7%적치신수평상,OHD+RBAO+CMB수거화 SNe Ia+RBAO+CMB수거부합득흔호.수착월래월다적 OHD수거적획득,아문혹허재장래가이사용 OHD수거대체 SNe Ia수거래한제우주학삼량.
Radial Baryon Acoustic Oscillation (RBAO)measurements,distant type Ia supernovae (SNe Ia),the observational H(z)data (OHD)and the Cosmic Microwave Background (CMB)shift parameter data are used to constrain cosmological parameters ofΛCDM and XCDM cosmologies and to further examine the role of OHD and SNe Ia data in cosmological constraints.The likelihood function over h is marginalized by integrating the probability density P∝e(-χ2/2)to obtain best fitting results and confidence regions in theΩm-ΩΛplane.Combination analysis for bothΛCDM and XCDM models reveal that confidence regions of 68.3%, 95.4% and 99.7% levels using OHD+RBAO+CMB data are in good agreement with that of SNe Ia+RBAO+CMB data which is consistent with data from Lin et al.(2009).With more OHD data,it may be possible to constrain cosmological parameters using OHD data instead of SNe Ia data in the future.