Recombination induced softening and reheating of the cosmic plasma

被引：14

作者：

Leung, PK ^{[1
]}

Chan, CW

Chu, MC

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

[3] NYU, Dept Phys, New York, NY 10003 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 349卷 / 02期

关键词：

cosmic microwave background cosmology : theory;

D O I：

10.1111/j.1365-2966.2004.07524.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The atomic recombination process leads to a softening of the matter equation of state as reflected by a reduced generalized adiabatic index, with accompanying heat release. We study the effects of this recombination softening and reheating of the cosmic plasma on the ionization history, visibility function, cold dark matter (CDM) transfer function and the cosmic microwave background (CMB) spectra. The resulting modification of the CMB spectrum is 1/10 of WMAP's current error and is comparable to Planck's error. Therefore, this effect should be considered when data with higher accuracy are analysed.

引用

页码：632 / 640

页数：9

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