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The legacy of Enrico Fermi. The challenges of the future

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CREF promotes original and high-impact lines of research, based on physical methods, but with a strong interdisciplinary character and in relation to the main problems of the modern knowledge society.

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The CREF was born with a dual soul: a research centre and a historical museum. Its aim is to preserve and disseminate the memory of Enrico Fermi and to promote the dissemination and communication of scientific culture.

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la ricerca

Complexity in self-gravitating systems and dark matter

Head of Research
Francesco Sylos Labini

Scientific content and goals

Our research activity has developed along two main lines: the study of galaxy formation and the analysis of data from our Galaxy and external galaxies to measure kinematic properties. The two lines are interconnected because observations of galactic velocity fields are the data needed to test any dynamical model. Our goal is to develop a new model of mass distribution in galaxies based on Newtonian gravity, which requires a smaller amount of dark matter than the case of the spherical halo, as in the galactic disk. We have developed two methods to reconstruct the complete three-dimensional kinematic properties, the first for our Galaxy and the second for external galaxies. As for our Galaxy, the GAIA satellite has precisely measured the spatial position and velocity of over 30 million stars. We analyzed the Gaia-DR3 data and extended the three-dimensional kinematic maps to a distance 30% greater than the official GAIA maps, i.e. from 20 kpc to 30 kpc, using a statistical method of deconvolution of measurement errors. To characterize the kinematic properties of external galaxies, we have introduced and developed a new technique that allows measuring spatial velocity anisotropies in both components, thus reconstructing two-dimensional velocity maps. We have employed these methods to characterize the velocity fields of 25 galaxies where high-resolution velocity field measurements are available.

  • Martin Lòpez-Corredoira, Instituto de Astrofìsica de Canarias, La Laguna, Spain
  • Sébastien Còmoron, Instituto de Astrofìsica de Canarias, La Laguna, Spain 
  • Zofia Chrobàkovà, Faculty of Mathematics, Physics, and Informatics, Comenius University, Bratislava, Slovakia 
  • Michael Joyce, Lab. LPNHE Université Sorbonne – Paris VI, France
  • Roberto Capuzzo Dolcetta, Dipartimento di Fisica, Università di Roma “Sapienza” , Roma, Italia
  • “Francesco Sylos Labini, Žofia Chrobàkovà, Roberto Capuzzo-Dolcetta, Martìn Lòpez-Corredoira “”Mass models of the Milky Way and estimation of its mass from the GAIA DR3 data-set”” The Astrophysical Journal, 945, 3, 2023
  • Hai-Feng Wang, Žofia Chrobàkovà, , Martìn Lòpez-Corredoira, Francesco Sylos Labini, “”Mapping the Milky Way Disk with GAIA DR3: 3D extended kinematic maps and rotation curve to 30 kpc”” The Astrophysical Journal, 942, 12, 2023
  • G. De Marzo, F. Sylos Labini and L.Pietronero “Zipf’s law for cosmic structures: how large are the greatest structures in the universe?”” Astron.Astrophys. 651, A114 (2021) 
  • F. Sylos Labini and M. Joyce “Gravitational collapse from cold uniform asymmetric initial conditions”” Astron.Astrophys. 652, A8 (2021)
Francesco Sylos Labini, Dirigente di Ricerca, CREF
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