A rheological model for the deformation and orbital dynamics of celestial bodies

• Grant number: 18/02905-4
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: July 15, 2018
• End date: July 14, 2019
• Field of knowledge: Physical Sciences and Mathematics - Mathematics - Applied Mathematics
• Principal Investigator: Clodoaldo Grotta Ragazzo
• Grantee: Yeva Gevorgyan de Mendonça
• Supervisor: Gwenael Boue
• Host Institution: Instituto de Matemática e Estatística (IME). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: Observatoire de Paris, France
• Associated to the scholarship: 15/26253-8 - Tidal effects on the dynamics of two- and three-body systems under gravitational forces, BP.DR

Abstract

The goal of this internship project is to investigate the effects of tidal forces on the orbital evolution of a celestial body (tipically, a terrestrial planet or moon in either our solar system or exoplanetary systems) modelled after an n-layer rheological model (possibly including icy crusts, subsurface oceans, molten mantles, solid cores, etc.), and to compare the results of the numerical integration of the models with real, observational data.

Scientific publications

(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)

GEVORGYAN, YEVA; BOUE, GWENAEL; RAGAZZO, CLODOALDO; RUIZ, LUCAS S.; CORREIA, ALEXANDRE C. M.. Andrade rheology in time-domain. Application to Enceladus' dissipation of energy due to forced libration. ICARUS, v. 343, JUN 2020. (16/25053-8, 15/26253-8, 18/02905-4)

RAGAZZO, CLODOALDO; BOUE, GWENAEL; GEVORGYAN, YEVA; RUIZ, LUCAS S.. Librations of a body composed of a deformable mantle and a fluid core. CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY, v. 134, n. 2, p. 83-pg., 2022-04-01. (15/26253-8, 16/25053-8, 18/02905-4)