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

• Grant number: 17/21384-2
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: January 30, 2018
• End date: January 29, 2019
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Germán Lugones
• Grantee: Jonas Pedro Pereira
• Supervisor: Nils Andersson
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Institution abroad: 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

Abstract

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

(10)

(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)

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. (17/21384-2, 15/04174-9)

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. (18/04281-8, 17/21384-2, 19/15124-3, 15/04174-9)

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. (15/04174-9, 17/21384-2)

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. (17/21384-2, 15/04174-9, 13/26258-4, 13/15088-0)

PEREIRA, JONAS P.; LUGONES, GERMAN. General Relativistic Surface Degrees of Freedom in Perturbed Hybrid Stars. ASTROPHYSICAL JOURNAL, v. 871, n. 1, JAN 20 2019. (15/04174-9, 17/21384-2)

DE LORENCI, V. A.; FERREIRA JUNIOR, A. L.; PEREIRA, J. P.. Trirefringence in nonlinear magnetoelectric metamaterials revisited. PHYSICAL REVIEW A, v. 99, n. 5, p. 8-pg., 2019-05-28. (17/21384-2, 15/04174-9)

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. (17/21384-2, 15/04174-9)

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. (17/21384-2, 15/04174-9, 13/26258-4)

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. (17/21384-2, 15/04174-9)

GITTINS, FABIAN; ANDERSSON, NILS; PEREIRA, JONAS P.. Tidal deformations of neutron stars with elastic crusts. PHYSICAL REVIEW D, v. 101, n. 10, p. 16-pg., 2020-05-20. (17/21384-2, 15/04174-9)