Results from the Wilkinson Microwave Anisotropy Probe

被引:50
作者
Komatsu, Eiichiro [1 ,2 ]
Bennett, Charles L. [3 ]
机构
[1] Max Planck Inst Astrophys, D-85740 Munich, Germany
[2] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Univ, WPI, Kashiwa, Chiba 2778583, Japan
[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
来源
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2014年 / 2014卷 / 06期
关键词
BARYON ACOUSTIC-OSCILLATIONS; BACKGROUND POWER SPECTRUM; WMAP OBSERVATIONS; INFLATIONARY UNIVERSE; BEAM PROFILES; SKY MAPS; POLARIZATION; TELESCOPE; COSMOLOGY; RADIATION;
D O I
10.1093/ptep/ptu083
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The Wilkinson Microwave Anisotropy Probe (WMAP) mapped the distribution of temperature and polarization over the entire sky in five microwave frequency bands. These full-sky maps were used to obtain measurements of temperature and polarization anisotropy of the cosmic microwave background with unprecedented accuracy and precision. The analysis of two-point correlation functions of temperature and polarization data gives determinations of the fundamental cosmological parameters such as the age and composition of the universe, as well as the key parameters describing the physics of inflation, which is further constrained by three-point correlation functions. WMAP observations alone reduced the flat (Lambda CDM) cosmological model (six) parameter volume by a factor of >68,000 compared with pre-WMAP measurements. The WMAP observations (sometimes in combination with other astrophysical probes) convincingly show the existence of non-baryonic dark matter, the cosmic neutrino background, the flatness of the spatial geometry of the universe, a deviation from a scale-invariant spectrum of initial scalar fluctuations, and that the current universe is undergoing an accelerated expansion. The WMAP observations provide the strongest ever support for inflation; namely, the structures we see in the universe originate from quantum fluctuations generated during inflation.
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页数:24
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