Equation of state of matter under extreme conditions: models and applications

• Grant number: 22/02341-9
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2022
• End date: August 31, 2024
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Germán Lugones
• Grantee: Germán Lugones
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil

Abstract

Although the state of matter at densities around and below the nuclear saturation density is reasonably well understood and constrained by theory and experiments, the state of matter at higher densities can only be constrained by astrophysical observations. In the last 10 years, substantial advances have been made in determining various properties of neutron stars through the observation of radio waves (pulsars), X-rays (NICER) and gravitational waves (LIGO/Virgo). In this project, we will continue with the work carried out in recent years, which focuses on establishing links between microphysical properties of dense matter and astrophysical observables through the study of neutron star oscillation modes and tidal deformabilities. (AU)

Scientific publications

(4)

(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)

RANEA-SANDOVAL, IGNACIO F.; GUILERA, OCTAVIO M.; MARIANI, MAURO; LUGONES, GERMAN. Breaking of universal relationships of axial wI modes in hybrid stars: Rapid and slow hadron-quark conversion scenarios. PHYSICAL REVIEW D, v. 106, n. 4, p. 17-pg., 2022-08-25. (13/10559-5, 22/02341-9)

LENZI, C. H.; LUGONES, G.; VASQUEZ, C.. Hybrid stars with reactive interfaces: Analysis within the Nambu-Jona-Lasinio model. PHYSICAL REVIEW D, v. 107, n. 8, p. 12-pg., 2023-04-19. (22/02341-9, 13/10559-5, 17/05660-0, 20/05238-9)

LUGONES, GERMAN; MARIANI, MAURO; RANEA-SANDOVALB, IGNACIO F.. A model-agnostic analysis of hybrid stars with reactive interfaces. Journal of Cosmology and Astroparticle Physics, v. N/A, n. 3, p. 19-pg., 2023-03-01. (22/02341-9, 13/10559-5)

LUGONES, GERMAN; OUYED, R; LEAHY, D; KONING, N; FISCHER, T; KOHSUKE, S; MANNARELLI, M; WEBER, F. Stellar stability in the presence of reacting interfaces: consequences for hybrid stars. Journal of Physics: Conference Series, v. 2536, p. 8-pg., 2023-01-01. (22/02341-9, 13/10559-5)