Project description
New large-scale structure measurements of the Universe could offer clues to gravity theories
The Universe presents structure over a wide range of physical scales. The large-scale structure refers to galaxy and matter patterns on scales much larger than individual galaxies or galaxy groups. These correlated structures can be clearly observed in galaxy redshift surveys. Upcoming large-scale structure surveys are expected to deliver incredibly detailed pictures of our sky over a wide range of scales and redshift measurements, opening the way to a whole new range of gravity tests. The EU-funded LSSgrav project plans to construct new cosmological observables to test fundamental gravity properties on scales that have previously not been investigated through standard large-scale analyses.
Objective
The objective of my proposal is to test the law of gravity using the large-scale structure of our Universe. The way galaxies are distributed in the sky, as well as their observed size and shape, are directly sensitive to the theory of gravity. Upcoming large-scale structure surveys are expected to deliver very precise pictures of our sky over a wide range of scale and redshift, opening the way to a whole new range of tests of gravity. The aim of my project is to construct novel cosmological observables to test fundamental properties of gravity that are not accessible through standard large-scale structure analyses. With these observables, I will probe two distinct but complementary regimes of the large-scale structure.
First, I will construct new tests of gravity at large scales. In this regime, observables are affected by relativistic distortions that deform our image of the sky. The goal of my research is to construct novel, innovative methods to isolate these distortions and use them to probe some features of gravity that are not encoded in standard tests.
Second, I will probe gravity at small scales, in the non-linear regime of large-scale structure. The non-linear regime contains complementary information about the nature of gravitational interactions. I will use a novel observable, the line correlation function, to probe these interactions. This observable is sensitive to correlations in the phases of the galaxy density field and grant us access to information that is not included in standard statistical measures like the two-point correlation function.
The new cosmological observables constructed in this project will allow us to go beyond standard large-scale structure analyses, and to test in a model-independent way specific properties of gravity that have never been tested before at cosmological scales.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project's classification has been human-validated.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project's classification has been human-validated.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)
MAIN PROGRAMME
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
ERC-COG - Consolidator Grant
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2019-COG
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
1211 Geneve
Switzerland
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.