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Linking the dense matter equation of state with quasi-normal modes of compact stars

Grant number: 19/15124-3
Support type:Scholarships abroad - Research Internship - Master's degree
Effective date (Start): October 01, 2019
Effective date (End): March 20, 2020
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
Principal researcher:Germán Lugones
Grantee:Lucas Tonetto Coimbra
Supervisor abroad: Leonardo Gualtieri
Home Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
Research place: Università degli Studi di Roma La Sapienza, Italy  
Associated to the scholarship:18/04281-8 - Compact star oscillations in the gravitational wave era, BP.MS


Within the present project, we will analyze the quasi-normal modes of compact stars using an equation of state which has been obtained within non-relativistic many-body theory, using an updated and improved version of the effective interaction based on the Argonne-Urbana nuclear Hamiltonian, derived using the formalism of correlated basis functions and the cluster expansion technique. The main goal is to devise a way of extracting information on the equation of state of neutron stars from observations of its gravitational wave emission, in particular the frequencies and damping times of its quasi-normal modes. (AU)

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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)
PEREIRA, JONAS P.; BEJGER, MICHAL; TONETTO, LUCAS; LUGONES, GERMAN; HAENSEL, PAWEL; ZDUNIK, JULIAN LESZEK; SIENIAWSKA, MAGDALENA. Probing Elastic Quark Phases in Hybrid Stars with Radius Measurements. ASTROPHYSICAL JOURNAL, v. 910, n. 2 APR 2021. Web of Science Citations: 0.

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