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Euclid preparation. Cosmology Likelihood for Observables in Euclid (CLOE). 4: Validation and Performance

E. Martinelli A. Pezzotta D. Sciotti L. Blot M. Bonici +495 lainnya
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The Euclid satellite will provide data on the clustering of galaxies and on the distortion of their measured shapes, which can be used to constrain and test the cosmological model. However, the increase in precision places strong requirements on the accuracy of the theoretical modelling for the observables and of the full analysis pipeline. In this paper, we investigate the accuracy of the calculations performed by the Cosmology Likelihood for Observables in Euclid (CLOE), a software able to handle both the modelling of observables and their fit against observational data for both the photometric and spectroscopic surveys of Euclid, by comparing the output of CLOE with external codes used as benchmark. We perform such a comparison on the quantities entering the calculations of the observables, as well as on the final outputs of these calculations. Our results highlight the high accuracy of CLOE when comparing its calculation against external codes for Euclid observables on an extended range of operative cases. In particular, all the summary statistics of interest always differ less than $0.1\,\sigma$ from the chosen benchmark, and CLOE predictions are statistically compatible with simulated data obtained from benchmark codes. The same holds for the comparison of correlation function in configuration space for spectroscopic and photometric observables.

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APA MLA BibTeX
Martinelli, E., Pezzotta, A., Sciotti, D., Blot, L., Bonici, M., Camera, S. et al. (2025). Euclid preparation. Cosmology Likelihood for Observables in Euclid (CLOE). 4: Validation and Performance. https://www.semanticscholar.org/paper/c0646763170e43d294d9cc629b164868dc1b2cec

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