The primordial CH molecule as a possible probe for the first structures formation epoch

J. C. Campos; J. C. Saucedo Morales; A. A. Lipovka; R. Nunes-Lopez

doi:10.1017/S1743921306010416

The primordial CH molecule as a possible probe for the first structures formation epoch

J. C. Campos^*, J. C. Saucedo Morales, A. A. Lipovka, R. Nunes-Lopez

^*Corresponding author for this work

Departamento de Investigación en Física

Research output: Contribution to journal › Article › peer-review

Abstract

The role of primordial CH molecules in the first structures formation epoch is considered. We discuss the plausibility of observing protostructures in the Dark Age epoch of the Universe by studying the rotational structure of the CH molecule. It is stressed that considerable abundances of this molecule could be formed for different Inhomogeneous BBN models, which could lead to observable spectral-spatial fluctuations in the CMBR spectrum. The calculation is carried out for the Lambda-CDM cosmology and for typical first structures physical conditions. The chemical evolution of the structures is followed numerically, and the optical depth for the most important ground rotational transitions of the CH molecule are proposed. It is shown that under reasonable conditions the primordial CH molecule can be observed with mm-telescopes under construction.

Original language	English
Pages (from-to)	413
Number of pages	1
Journal	Proceedings of the International Astronomical Union
Volume	2
Issue number	S235
DOIs	https://doi.org/10.1017/S1743921306010416
State	Published - Aug 2006

Keywords

Galaxies
Molecules
Structure formation

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abstract = "The role of primordial CH molecules in the first structures formation epoch is considered. We discuss the plausibility of observing protostructures in the Dark Age epoch of the Universe by studying the rotational structure of the CH molecule. It is stressed that considerable abundances of this molecule could be formed for different Inhomogeneous BBN models, which could lead to observable spectral-spatial fluctuations in the CMBR spectrum. The calculation is carried out for the Lambda-CDM cosmology and for typical first structures physical conditions. The chemical evolution of the structures is followed numerically, and the optical depth for the most important ground rotational transitions of the CH molecule are proposed. It is shown that under reasonable conditions the primordial CH molecule can be observed with mm-telescopes under construction.",

keywords = "Galaxies, Molecules, Structure formation",

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T1 - The primordial CH molecule as a possible probe for the first structures formation epoch

AU - Campos, J. C.

AU - Saucedo Morales, J. C.

AU - Lipovka, A. A.

AU - Nunes-Lopez, R.

PY - 2006/8

Y1 - 2006/8

N2 - The role of primordial CH molecules in the first structures formation epoch is considered. We discuss the plausibility of observing protostructures in the Dark Age epoch of the Universe by studying the rotational structure of the CH molecule. It is stressed that considerable abundances of this molecule could be formed for different Inhomogeneous BBN models, which could lead to observable spectral-spatial fluctuations in the CMBR spectrum. The calculation is carried out for the Lambda-CDM cosmology and for typical first structures physical conditions. The chemical evolution of the structures is followed numerically, and the optical depth for the most important ground rotational transitions of the CH molecule are proposed. It is shown that under reasonable conditions the primordial CH molecule can be observed with mm-telescopes under construction.

AB - The role of primordial CH molecules in the first structures formation epoch is considered. We discuss the plausibility of observing protostructures in the Dark Age epoch of the Universe by studying the rotational structure of the CH molecule. It is stressed that considerable abundances of this molecule could be formed for different Inhomogeneous BBN models, which could lead to observable spectral-spatial fluctuations in the CMBR spectrum. The calculation is carried out for the Lambda-CDM cosmology and for typical first structures physical conditions. The chemical evolution of the structures is followed numerically, and the optical depth for the most important ground rotational transitions of the CH molecule are proposed. It is shown that under reasonable conditions the primordial CH molecule can be observed with mm-telescopes under construction.

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KW - Molecules

KW - Structure formation

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SP - 413

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

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ER -

The primordial CH molecule as a possible probe for the first structures formation epoch

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