DELAYED RECOMBINATION

P J. E. PEEBLES; S. SEAGER; WAYNE HU

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DELAYED RECOMBINATION

机译：延迟重组

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Under the standard model for recombination of the primeval plasma and the cold dark matter model for structure formation, recent measurements of the first peak in the angular power spectrum of the cosmic microwave background temperature indicate that the spatial geometry of the universe is nearly flat. If sources of Lyα resonance radiation, such as stars or active galactic nuclei, were present at z ～ 1000 they would delay recombination, shifting the first peak to larger angular scales and producing a positive bias in this measure of space curvature. It can be distinguished from space curvature by its suppression of the secondary peaks in the spectrum.

机译：在用于原始等离子体重组的标准模型和用于结构形成的冷暗物质模型的标准模型下，最近对宇宙微波背景温度的角功率谱中的第一个峰进行的测量表明，宇宙的空间几何形状几乎是平坦的。如果在z〜1000处存在Lyα共振辐射源，例如恒星或活跃的银河核，它们将延迟重组，将第一个峰移动到更大的角度范围，并在此空间曲率测量中产生正偏差。可以通过抑制光谱中的次要峰来区别于空间曲率。

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《The Astrophysical journal》 |2000年第1期|p.1-4|共4页
作者
P J. E. PEEBLES; S. SEAGER; WAYNE HU;
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正文语种 eng
中图分类天文学;
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cosmic microwave background;

机译：宇宙微波背景;

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DELAYED RECOMBINATION

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