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arXiv · 2203.05616

Cosmologia com aglomerados de galáxias

M. Penna-Lima
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Abstract

Galaxy clusters are important cosmological probes since their abundance and spatial distribution are directly linked to structure formation on large scales. The principal uncertainty source on the cosmological parameter constraints concerns the cluster mass estimation from mass proxies. In addition, future surveys will provide a large amount of data, requiring an improvement in the accuracy of other elements used in the construction of cluster likelihoods. Therefore, accurate modeling of the mass-observable relations and reducing the effect of different systematic errors are fundamental steps for the success of cluster cosmology. In this work, we briefly review the abundance of galaxy clusters and discuss many sources of uncertainty. Os aglomerados de galáxias são importantes sondas cosmológicas, já que a abundância e a distribuição espacial desses objetos estão diretamente ligadas à formação de estruturas em grandes escalas. A maior fonte de incerteza nas restrições de parâmetros cosmológicos é originária das estimativas das massas dos aglomerados a partir da relação massa-observável. Além disso, os próximos grandes levantamentos fornecerão uma grande quantidade de dados, requerendo uma melhoria na precisão de outros elementos utilizados na construção das verossimilhanças de aglomerados. Portanto, uma modelagem precisa da relação massa-observável e diminuir o efeito dos diferentes erros sistemáticos são passos fundamentais para o sucesso da cosmologia com aglomerados. Neste trabalho, fazemos uma breve revisão da abundância de aglomerados de galáxias, e discussão de diferentes fontes de incerteza.

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BibTeXRIS

M. Penna-Lima. 2022-03-10. Cosmologia com aglomerados de galáxias. https://doi.org/10.5151/astrocientistas2021-9

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