Decoding rotating neutron stars: Role of the symmetry energy slope

Abstract

In December 2023, the Fermi LAT Catalog announced the discovery of 33 new millisecond pulsars. Motivated by that, in this work, I study how different values of the symmetry energy slope $(L)$ affect the properties of static and slowly rotating neutron stars. For fixed values of angular velocity, I study how the slope influences the increase of the maximum mass, the radii of the canonical 1.4 solar mass, its eccentricity, as well the same quantities for the 2.01 $M_{\odot }$ stars. I show that different slope values cause different variations not only the absolute quantities but also in relative ones. Indeed, different slope values predict different values for the eccentricity, which does not depend on the absolute value of the neutron stars' radii. Therefore, this quantity can be a powerful tool to constrain the symmetry energy slope.

11 pages, 4 figures

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Cited by in corpus (8)

• Role of the symmetry energy slope in neutron stars: exploring the model-dependency
• Role of local anisotropy in hybrid stars
• An Undergraduate Approach to the Quantum Hadrodynamics and the Physics of Neutron Stars
• Rotational mass of anisotropic neutron stars within Rastall gravity
• Rotating neutron stars with chaotic magnetic fields in general relativity and Rastall gravity
• Effects of the symmetry energy slope on magnetized neutron stars
• Accuracy and Applicability of the Hartle-Thorne and Komatsu-Eriguchi-Hachisu Methods for Modeling Rotating Neutron Stars
• An Undergraduate Approach to the Quantum Hadrodynamics and the Physics of Neutron Stars Part II: Neutron Stars' Exotic Content