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Title: Constraining a relativistic mean field model using neutron star mass–radius measurements I: nucleonic models
Authors: Huang, Chun
Raaijmakers, Geert
Watts, Anna L
Tolos, Laura
Providência, Constança 
Keywords: dense matter; equation of state; stars: neutron; X-rays: general
Issue Date: 2024
Publisher: Oxford University Press
Project: info:eu-repo/grantAgreement/UIDP/04564/2020/PT 
Serial title, monograph or event: Monthly Notices of the Royal Astronomical Society
Volume: 529
Issue: 4
Abstract: Measurements of neutron star mass and radius or tidal deformability deliver unique insight into the equation of state (EOS) of cold dense matter. EOS inference is very often done using generalized parametric or non-parametric models, which deliver no information on composition. In this paper, we consider a microscopic nuclear EOS model based on a field theoretical approach. We show that current measurements from NICER and gravitational wave observations constrain primarily the symmetric nuclear matter EOS. We then explore what could be delivered by measurements of mass and radius at the level anticipated for future large-area X-ray timing telescopes. These should be able to place very strong limits on the symmetric nuclear matter EOS, in addition to constraining the nuclear symmetry energy that determines the proton fraction inside the neutron star.
ISSN: 0035-8711
DOI: 10.1093/mnras/stae844
Rights: openAccess
Appears in Collections:I&D CFis - Artigos em Revistas Internacionais
FCTUC Física - Artigos em Revistas Internacionais

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