Hydrodynamical modes and gravitational instabilities in the universe during the recombination era (Q1115320)
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scientific article; zbMATH DE number 4085352
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Hydrodynamical modes and gravitational instabilities in the universe during the recombination era |
scientific article; zbMATH DE number 4085352 |
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Hydrodynamical modes and gravitational instabilities in the universe during the recombination era (English)
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1989
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We assume the Universe during the recombination era as a three-component fluid constituted by neutral hydrogen, plasma, and radiation; such fluids are coupled via the effects of photorecombination, photoionization, and Thomson scattering. The hydrodynamical modes are calculated and the relation with the gravitational instabilities is established. In addition to the well-known Jeans's instability modes two additional ones in the neighbourhood of \(10^{13}M_{\odot}\) are obtained in the case of an open Universe.
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recombination era
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three-component fluid
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neutral hydrogen
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plasma
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radiation
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photorecombination
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photoionization
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Thomson scattering
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hydrodynamical modes
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Jeans's instability
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