Combining cosmological constraints from cluster counts and galaxy clustering

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorLacasa, F.-
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Descrição: dc.descriptionPresent and future large scale surveys offer promising probes of cosmology. For example the Dark Energy Survey (DES) is forecast to detect ~300 millions galaxies and thousands clusters up to redshift ~1.3. I here show ongoing work to combine two probes of large scale structure : cluster number counts and galaxy 2-point function (in real or harmonic space). The halo model (coupled to a Halo Occupation Distribution) can be used to model the cross-covariance between these probes, and I introduce a diagrammatic method to compute easily the different terms involved. Furthermore, I compute the joint non-Gaussian likelihood, using the Gram-Charlier series. Then I show how to extend the methods of Bayesian hyperparameters to Poissonian distributions, in a first step to include them in this joint likelihood.-
Formato: dc.format216-218-
Idioma: dc.languageen-
Relação: dc.relationProceedings of the International Astronomical Union-
Relação: dc.relation0,117-
Relação: dc.relation0,117-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectcosmology-
Palavras-chave: dc.subjectgalaxies: statistics-
Palavras-chave: dc.subjectjoint probes-
Palavras-chave: dc.subjectmethods: data analysis-
Título: dc.titleCombining cosmological constraints from cluster counts and galaxy clustering-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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