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Using the halo model to maximise the information gain from forthcoming weak-lensing surveys.

Objective

The mechanism behind the current phase of accelerated expansion of the Universe is not understood. Either space is filled with dark energy, a substance that has never been detected in an earth-bound laboratory, or the gravitational equations of Einstein are incorrect and acceleration arises naturally within the correct theory. There are now a wide variety of models that purport to explain accelerated expansion, and often these models make different predictions for how matter is clustered in the Universe. Weak gravitational lensing uses measurements of the deflection of light from distant galaxies to infer the intervening distribution of matter, and thus allows us to discriminate between acceleration models. However, in its present state the lack of accurate modelling for the distribution of matter as a function of cosmological paradigm will be the major limitation in the interpretation of forthcoming weak lensing data: the goal of the 'halo modelling' project is to provide the required accuracy of modelling. To achieve this, the Fellow will take a novel hybrid approach; combining results from perturbation theory, high-accuracy simulations and semi-analytics. Crucially, the 'halo modelling' project will simultaneously improve our understanding of the distribution of baryons relative to dark matter in the Universe, and incorporate this. The current ignorance of the level of mass redistribution caused by baryonic feedback processes has the potential to severely degrade the constraining power of forthcoming lensing surveys.

Fields of science (EuroSciVoc)

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Programme(s)

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Topic(s)

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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.

MSCA-IF-GF - Global Fellowships

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) H2020-MSCA-IF-2015

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Coordinator

UNIVERSITAT DE BARCELONA
Net EU contribution

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.

€ 242 683,20
Address
GRAN VIA DE LES CORTS CATALANES 585
08007 BARCELONA
Spain

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Region
Este Cataluña Barcelona
Activity type
Higher or Secondary Education Establishments
Links
Total cost

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.

€ 242 683,20

Partners (1)

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