| Autor: |
Julio C. Campos‐García, Anton A. Lipovka, Julio C. Saucedo |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.2751986 |
| Popis: |
In the present work we discuss the possible signatures of first cosmological structures formed at the end of the dark‐age epoch (z ∼ 40–20). These correspond to the spectral‐spatial fluctuations in the cosmic microwave background radiation (CMBR), produced by elastic resonant scattering of CMBR photons by the rotational structure of the CH molecules formed in proto‐structures. The chemical kinetic of CH molecule is calculated in the expanding homogeneous medium and applied to proto‐structures in their linear stage of collapse, whose properties were estimated by using a top‐hat spherical approach and Lambda‐CDM cosmology. It is shown that the optical depth in the rotational structure of the CH molecule for some cases of non‐standard BBN (NBBN) is rather high and could be observed with radio telescopes under construction. Possible future observations are discussed as a crucial test for NBBN models. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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