Objective
The statistical properties of gravitational arcs in galaxy clusters is sensitive to several factors which depend on cosmology, like the geometry of the Universe, the number of clusters at redshifts where they are most efficient for lensing and the internal structure of lenses. Arc statistics therefore offers a potentially powerful cosmological tool. However, several studies have been done so far, attempting to constrain cosmological parameters using the statistical properties of lensed arcs but their result s turned out to be in contrast with what suggested by many other cosmological tests, evidencing a profound lack in our understanding of the physical properties and evolution of galaxy clusters which determine their lensing properties.
The goal of this proj ect is close this gap by combining a large amount of observational data with detailed theoretical modeling. On the one hand, we will test suitable software for automatic arc-detection and classification, and we will use them for analyzing the data from the Sloan Digital Sky Survey. We will update and extend existing observations and we will develop tools for data analysis which will be usable for manipulating both simulated and real images. On the other hand, we will use numerical simulations for studying the lensing properties of realistic cluster models in different cosmological frameworks. We will investigate the lensing effects by galaxy clusters obtained from high-resolution N-body and (magneto-) hydrodynamical simulations.
We will evaluate the impact on arc statistics of dynamical processes arising in clusters, like mergers. We will use large cosmological volumes for studying projection effects due to the alignment of matter along the line of sight and we will try to understand which role is played by magnetic fields and radiative cooling. Finally, we will study arc statistics in cosmological models with dark energy, aiming at evaluating the compatibility of these models with the observed number of arcs.
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.
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.
- natural sciences computer and information sciences data science
- natural sciences computer and information sciences software
- natural sciences physical sciences astronomy astrophysics dark matter
- natural sciences mathematics pure mathematics geometry
- natural sciences physical sciences astronomy physical cosmology
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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.
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.
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.
FP6-2002-MOBILITY-5
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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.
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.
Coordinator
Germany
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.