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Gravitational Lensing as a Cosmological Probe

I propose to develop new observational probes of cosmology based on gravitational lensing. The project consists of three themes: 1) Computer tools will be developed for detecting and measuring small-scale structures in the distr... ver más

29/02/2016

UNIBO

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

ALMA MATER STUDIORUM UNIVERSITA DI BOLOGNA No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2016-02-29 No tenemos la información de la convocatoria

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1 Participantes

UNIBO

0.00€ | Lider

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Líder del proyecto

ALMA MATER STUDIORUM UNIVERSITA DI BOLOGNA No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 2M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto I propose to develop new observational probes of cosmology based on gravitational lensing. The project consists of three themes: 1) Computer tools will be developed for detecting and measuring small-scale structures in the distribution of dark matter using strong gravitational lenses. This will resolve one of the few persistent conflicts between observations and the predictions of the Cold Dark Matter (CDM) model. The tools will enable the scientific community to take full advantage of present imaging data and future data coming from missions like the proposed EUCLID satellite. 2) There are several proposed and ongoing surveys designed to measure the weak gravitational lensing of galaxies across large regions of the sky and to measure the redshifts of hundreds of millions of galaxies. To maximize the use of this data I propose a joint analysis of redshift and lensing surveys that will increase the sensitivity to the expansion history of the Universe and separate two observational consequences of dark energy which are otherwise degenerate in weak lensing data alone. This would enable us to verify whether general relativity is valid on cosmological scales. 3) The feasibility of studying cosmology using future radio observations of the 21 cm radiation coming from early epochs of the Universe will be investigated. My work has shown that the gravitational lensing of this radiation could provide powerful constraints on the density of the Universe, dark energy's equation of state, and the masses of neutrinos. It should also be possible to actually map the distribution of dark matter across large sections of sky with high fidelity. My goal is to treat the observational noise and systematics realistically and determine what impact telescope design and survey strategy have on the scientific output.

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