Newtonian Cosmology
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Considerações sobre alguns resultados obtidos no contexto da cosmologia newtoniana
As equações de movimento são obtidas na cosmologia Newtoniana, com o uso da dinâmica Newtoniana e da teoria da gravitação de Newton. Mostra-se que estas equações são equiva- lentes às da relatividade geral, com o fator de escala obedecendo a mesma equação em ambas as teorias, quando a pressão é desprezível. Discute-se as características da ex
Publicado em: 2011
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2. Cosmologia na teoria de Visser / Cosmology from the Visser s theory
The advent of observational cosmology has led us to conclude that only 4% of whole Universe is composed by known matter (baryons). On the other hand 23% comes from a kind of non barionic dark matter. Moreover the cosmic dynamics is almost fully dominated by the so called dark energy (usually considered a kind of fluid), which corresponds to 73% of the energy
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2006
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3. Cosmologia na teoria de Visser / Cosmology from the Visser s theory
The advent of observational cosmology has led us to conclude that only 4% of whole Universe is composed by known matter (baryons). On the other hand 23% comes from a kind of non barionic dark matter. Moreover the cosmic dynamics is almost fully dominated by the so called dark energy (usually considered a kind of fluid), which corresponds to 73% of the energy
Publicado em: 2006
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4. The age problem and growing of structures for open system cosmology
A new equation for the density contrast is derived in the framework of reexamined Newtonian cosmology if we take into account adiabatic matter creation in the universe. The age of the universe and the reach of non linear regime of the density contrast are usually treated separately in the literature and this may leadtocontroversial conclusions regarding the
Braz. J. Phys.. Publicado em: 2001-09