Neutrinos massivos em cosmologia: geometria e crescimento de estruturas
DOI:
https://doi.org/10.47456/Cad.Astro.v7n1.51840Palavras-chave:
cosmologia, neutrinos, geometria, crescimento de estruturasResumo
Neutrinos são as partículas mais abundantes do Universo depois dos fótons, mas suas massas ainda não são conhecidas. Neste artigo mostramos como a cosmologia moderna permite investigar essa propriedade fundamental por meio da Radiação Cósmica de Fundo, das oscilações acústicas bariônicas e do crescimento das estruturas em larga escala. Discutimos como neutrinos, relativísticos no Universo primordial e não relativísticos em épocas tardias, deixam assinaturas tanto na história da expansão quanto na formação da teia cósmica. Mostramos também como dados recentes de levantamentos de galáxias, como o DESI, combinados com simulações cosmológicas, permitem impor limites cada vez mais precisos sobre a soma das massas dos neutrinos, tornando o Universo um poderoso detector dessas partículas.
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