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Models of Universe with an inhomogeneous Big Bang singularity. II. CMBR dipole anisotropy as a byproduct of a conic Big Bang singularity

机译:具有非均匀大爆炸奇异性的宇宙模型。 II。宇宙微波背景辐射   偶极各向异性作为圆锥大爆炸奇点的副产品

摘要

The existence of stars and galaxies reqires cosmological models with aninhomogeneous matter and radiation distribution. But in these models theinitial singularity surface t_0(r) is in general homogeneous (independent ofr). In this second paper of a series devoted to an inhomogeneous Big Bangsingularity, we investigate the cosmic microwave background radiation (CMBR)dipole. A special Tolman-Bondi Universe is used to study the effect of aBig-Bang singularity, depending linearly on r, on the CMBR anisotropy. It isshown that, for an observer located off the ``center'' of this Universe (r=0),the parameters of the model can be tuned so as to reproduce, with a goodapproximation, the dipole and the quadrupole moments of the CMBR anisotropyobserved in recent experiments. If the dipole should prove cosmological, aslight delaying of the Big-Bang over spatial coordinates would thus be a goodcandidate for its interpretation.
机译:恒星和星系的存在要求具有不均匀物质和辐射分布的宇宙学模型。但是在这些模型中,初始奇异面t_0(r)通常是均匀的(与r无关)。在第二篇有关不均匀大爆炸奇异性的系列文章中,我们研究了宇宙微波背景辐射(CMBR)偶极子。特殊的Tolman-Bondi宇宙用于研究线性依赖于r的aBig-Bang奇异性对CMBR各向异性的影响。结果表明,对于远离此宇宙``中心''(r = 0)的观察者,可以调整模型的参数,以便很好地重现CMBR的偶极矩和四极矩。在最近的实验中观察到各向异性。如果偶极子证明是宇宙学的,那么大爆炸在空间坐标上的轻微延迟将因此是其解释的一个很好的候选者。

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  • 作者

    Schneider, J.; Celerier, M. N.;

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  • 年度 1999
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  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
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