IMMAGINE
NON DISPONIBILE
Cosmic structures and cosmology
Componenti
- Diaferio Antonaldo (Professore/Professoressa Ordinario/a)
- Camera Stefano (Professore/Professoressa Associato/a)
- Ostorero Luisa (Ricercatore/Ricercatrice)
- Pace Francesco (Ricercatore/Ricercatrice)
- Samantha J. Rossiter (PhD Student)
- Jiakang Han (PhD Student)
- Federico Montano (PhD Student)
Contatti
Settore ERC
Attività
The wealth of cosmological data is currently interpreted with the ΛCDM model: Einstein's cosmological constant and cold dark matter. However, there is no obvious physical mechanism that can generate the cosmological constant or more sophisticated dark energy fluids, nor is there any convincing direct or indirect confirmation of the existence of the cold dark matter particle. We investigate a wide range of extended and modified gravity models, by making the best possible use of all observational constraints to test the viability of these models at various scales and epochs.
We investigate selected classes of cosmological models and theories of gravity as baseline to understand the capability of future surveys to address fundamental questions about the Universe.
We use N-body/hydrodynamical simulations, analytical and numerical techniques (Einstein-Boltzmann and MCMC codes) and observations in different bands to investigate the formation and evolution of galaxies, clusters, and larger structures, and to describe the properties of cosmological models beyond the standard ΛCDM.
We developed the caustic technique, a unique method to estimate the mass of galaxy clusters well beyond the region of dynamical equilibrium. The method is based on galaxy redshifts alone and is complementary to the more popular gravitational lensing techniques.
- Hectospec Cluster Survey (HeCS)
- HectoMAP Galaxy Redshift Survey
- Euclid Consortium
- SKA Observatory (SKAO) and precursors/pathfinders (LOFAR, ASKAP, MeerKAT)
- Vera C. Rubin Dark Energy Science Collaboration (DESC)
- Einstein Telescope