Publication Title
The European Physical Journal C
Document Type
Article
Abstract/Description
In this work, we investigate neutron stars (NS) in f(R,Lm) theory of gravity for the case f(R,Lm) = R +Lm +σRLm, where R is the Ricci scalar and Lm the Lagrangian matter density. In the termσRLm,σ represents the coupling between the gravitational and particles fields. For the first time the hydrostatic equilibrium equations in the theory are solved considering realistic equations of state and NS masses and radii obtained are subject to joint constrains from massivepulsars,thegravitationalwaveeventGW170817and from the PSR J0030+0451 mass-radius from NASA’s Neutron Star Interior Composition Explorer (NICER) data. We show that in this theory of gravity, the mass-radius results can accommodate massive pulsars, while the general theory of relativity can hardly do it. The theory also can explain the observed NS within the radius region constrained by the GW170817 and PSR J0030+0451 observations for masses around 1.4 M.
Department
Physics and Astronomy
First Page
1012
DOI
10.1140/epjc/s10052-021-09785-3
Volume
81
Issue
11
ISSN
1434-6044
Date
11-18-2021
Citation Information
R., Lobato V.; G., Carvalho A.; and Carlos, Bertulani A., "Neutron stars in f(R,Lm) gravity with realistic equations of state: joint-constrains with GW170817, massive pulsars, and the PSR J0030+0451 mass-radius from NICER data" (2021). Faculty Publications. 234.
https://digitalcommons.tamuc.edu/cose-faculty-publications/234
