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Asteroseismology of quasi-periodic oscillations and constraints to hybrid neutron star models

Grant number: 17/21384-2
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): January 30, 2018
Effective date (End): January 29, 2019
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
Principal Investigator:Germán Lugones
Grantee:Jonas Pedro Pereira
Supervisor abroad: Nils Andersson
Home Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
Local de pesquisa : University of Southampton, England  
Associated to the scholarship:15/04174-9 - Some consequences of the microphysics of volumes and surfaces in compact systems, BP.PD


We propose a year long postdoctoral visit to the University of Southampton in order to interact with Prof. Nils Andersson on quasi-periodic oscillations (QPOs) in isolated neutron stars as axial (shear, torsional) perturbations and the constraints this brings to compact stellar models. Special attention will be paid to the imprints and byproducts of microphysical aspects of volumes and surfaces of hybrid (stratified) stars on QPOs. This is in total consonance with the current FAPESP project of the candidate and Prof. Nils Andersson's lines of research.

Scientific publications (7)
(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)
GITTINS, FABIAN; ANDERSSON, NILS; PEREIRA, JONAS P. Tidal deformations of neutron stars with elastic crusts. Physical Review D, v. 101, n. 10 MAY 20 2020. Web of Science Citations: 0.
PEREIRA, JONAS P.; BEJGER, MICHAL; ANDERSSON, NILS; GITTINS, FABIAN. Tidal Deformations of Hybrid Stars with Sharp Phase Transitions and Elastic Crusts. ASTROPHYSICAL JOURNAL, v. 895, n. 1 MAY 2020. Web of Science Citations: 0.
DE LIMA, RAFAEL C. R.; COELHO, JAZIEL G.; PEREIRA, JONAS P.; RODRIGUES, V, CLAUDIA; RUEDA, JORGE A. Evidence for a Multipolar Magnetic Field in SGR J1745-2900 from X-Ray Light-curve Analysis. ASTROPHYSICAL JOURNAL, v. 889, n. 2 FEB 1 2020. Web of Science Citations: 0.
DE LORENCI, V. A.; FERREIRA JUNIOR, A. L.; PEREIRA, J. P. Trirefringence in nonlinear magnetoelectric metamaterials revisited. Physical Review A, v. 99, n. 5 MAY 28 2019. Web of Science Citations: 0.
PEREIRA, JONAS P.; LUGONES, GERMAN. General Relativistic Surface Degrees of Freedom in Perturbed Hybrid Stars. ASTROPHYSICAL JOURNAL, v. 871, n. 1 JAN 20 2019. Web of Science Citations: 1.
PEREIRA, JONAS P.; FLORES, CESAR V.; LUGONES, GERMAN. Phase Transition Effects on the Dynamical Stability of Hybrid Neutron Stars. ASTROPHYSICAL JOURNAL, v. 860, n. 1 JUN 10 2018. Web of Science Citations: 9.
PEREIRA, JONAS P.; COELHO, JAZIEL G.; DE LIMA, RAFAEL C. R. Born-Infeld magnetars: larger than classical toroidal magnetic fields and implications for gravitational-wave astronomy. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 5 MAY 8 2018. Web of Science Citations: 0.

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