The Large-Scale Angular Correlations in CMB Temperature Maps
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2005
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| _version_ | 1876483917520830464 |
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| author | Armando Bernui |
| author_facet | Armando Bernui |
| contents | The Large-Scale Angular Correlations in CMB Temperature Maps Armando Bernui Física, Astronomía y Matemáticas Observations show that the Cosmic Microwave Background (CMB) contains tiny variations at the 10¡5 levelaround its black-body equilibrium temperature. The detection of these temperature fluctuations provides tomodern Cosmology evidence for the existence of primordial density perturbations that seeded all the structurespresently observed. The vast majority of the cosmological information is contained in the 2-point temperaturefunction, which measures the angular correlation of these temperature fluctuations distributed on the celestialsphere. Here we study such angular correlations using a recently introduced statistic-geometrical method. Moreover,we use Monte Carlo simulated CMB temperature maps to show the equivalence of this method with the2-point temperature function (best known as the 2-Point Angular Correlation Function). We also investigatehere the robustness of this new method under possible divisions of the original catalog-data in sub-catalogs.Finally, we show some applications of this new method to simple cases. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435747 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35 |
| format | Artículo científico |
| id | redalyc_46435747 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | The Large-Scale Angular Correlations in CMB Temperature Maps Armando Bernui Física, Astronomía y Matemáticas The Large-Scale Angular Correlations in CMB Temperature Maps Armando Bernui Física, Astronomía y Matemáticas Observations show that the Cosmic Microwave Background (CMB) contains tiny variations at the 10¡5 levelaround its black-body equilibrium temperature. The detection of these temperature fluctuations provides tomodern Cosmology evidence for the existence of primordial density perturbations that seeded all the structurespresently observed. The vast majority of the cosmological information is contained in the 2-point temperaturefunction, which measures the angular correlation of these temperature fluctuations distributed on the celestialsphere. Here we study such angular correlations using a recently introduced statistic-geometrical method. Moreover,we use Monte Carlo simulated CMB temperature maps to show the equivalence of this method with the2-point temperature function (best known as the 2-Point Angular Correlation Function). We also investigatehere the robustness of this new method under possible divisions of the original catalog-data in sub-catalogs.Finally, we show some applications of this new method to simple cases. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435747 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35 |
| title | The Large-Scale Angular Correlations in CMB Temperature Maps |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46435747 |