CORDIS - EU research results
CORDIS

N-point statistics as a bridge between cosmological observations and the underlying physics

Project description

Primordial signatures on our large-scale cosmic canvas

The standard model of cosmology attempts to explain the evolution and contents of our Universe, yet important questions remain unanswered. The data to fill in some of its gaps may be hidden in the large-scale structure of the Universe, patterns much larger than individual galaxies or groups of galaxies. The physical processes shaping this structure each left their ‘fingerprint’ on the distinct clustering pattern at different scales. With the support of the Marie Skłodowska-Curie Actions programme, the Cosmo-Bridge project will harness advanced statistics to connect the observables to the underlying physics. The new analysis methods will support upcoming large-volume galaxy surveys to maximise their potential for discovery.

Objective

Over the last decades, we have established a standard cosmological paradigm by combining the information from complementary cosmological probes. However, many intriguing questions remain to be answered: the nature of dark energy, the driving mechanisms of the cosmic inflation, and masses of neutrinos. In this proposal, I will focus on the cosmological information content of the large-scale structure (LSS) of the Universe. Different physical processes leave their unique imprints on the clustering pattern of LSS at different scales, and N-point statistics act a bridge between the observables and the underlying physics. In the coming years, new large-volume galaxy surveys will probe the LSS of the Universe with exquisite detail. However, traditional analysis methods, based mostly on 2-point statistics alone, are not adequate for these new surveys and must urgently be revised to ensure their full potential. This proposal aims to maximise the information to be extracted from the upcoming surveys. With the Marie-Curie fellowship, I will carry out a consistent joint analysis of the 2- and 3-point statistics, and develop a complementary but simplified treatment of the N-point statistics. These tools will be applied to the new data to constrain the cosmological models, with special focus in understanding the properties of the primordial signatures and models beyond the standard cosmological paradigm. In the outgoing phase, I will work at Univesity of Florida (US) to benefit from the expertise in the leading algorithms to estimate higher-order statistics, their theoretical modelling, and knowledge about high-performance computing. In the incoming phase, I will work at the Max Planck Institute for Extraterrestrial Physics (Germany), I will delve into the data from the real surveys and understand potential systematic errors. With the help of the experts at MPE, the experience and techniques acquired in the US will be applied to the datasets to extract more precise information.

Coordinator

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Net EU contribution
€ 264 669,12
Address
HOFGARTENSTRASSE 8
80539 Munchen
Germany

See on map

Region
Bayern Oberbayern München, Kreisfreie Stadt
Activity type
Research Organisations
Links
Total cost
€ 264 669,12

Partners (1)