- Research Grants
Bachelor's in Physics from Universidade Estadual de Campinas (UNICAMP, 2008), Master's in Mathematics from UNICAMP (2010) and Doctorate in Sciences (2015) from the Institute of Physics "Gleb Wataghin" of UNICAMP. Was a post-doc at the "Instituto de Astronomia, Geofísica e Ciências Atmosféricas" of Universidade de São Paulo (2015-2018) and at UNICAMP (2018-2019). Currently Adjunt Professor at Federal University of ABC. Has experience in Physics, focusing on Genelral Relativity and Gravitation and in Galactic Dynamics. (Source: Lattes Curriculum)
This project aims to study the Hamiltonian dynamics of test particles in Newtonian and relativistic discoidal systems, with emphasis mainly in the dynamics of stars in spiral galaxies (especially in the Milky Way). Our goal is to advance in the description of the Hamiltonian dynamics in these systems, focusing on two different aspects: (i) the regular motion around equilibrium points an...
Study of Newtonian and post-Newtonian self-gravitating structures with and whthout dark matter halos utilizing tools from dynamical systems. Study of chaos and stability in these models. Qualitative and computational analysis of the problem. Study of the distribution function for the disks and for dark matter.
Non-riemannian geometries, specially those with torsion and non-metricity will be considered , applying them to models of galaxies and analyzing their rotation curves. One expects to be able to explain the incongruence between the rotation curves based on gereral relativity and the observational data reffering to matter distribution.
The general relativistic treatment of the radiation field of a spherically symmetric star introduces new features, which are absent in Newtonian gravity. One important result is the presence of the "Eddington Capture Sphere'', a radius for which the gravitational and radiation forces balance. This region is shown to be an attractor for the dynamics of test particles. We intent to deepen...
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
|Data from Web of Science|
(References retrieved automatically from State of São Paulo Research Institutions)
VIEIRA, Ronaldo Savioli Sumé. Aspectos dinâmicos de sistemas astrofísicos discoidais. Tese (Doutorado) - Instituto de Física Gleb Wataghin. Universidade Estadual de Campinas (UNICAMP). (10/00487-9)
VIEIRA, Ronaldo Savioli Sumé. Geometria de Weyl e materia escura. Dissertação (Mestrado) - Instituto de Matemática, Estatística e Computação Científica. Universidade Estadual de Campinas (UNICAMP). (07/06839-1)