GW170817 constraints analyzed with Gogny forces and momentum-dependent interactions

O. Lourenço; M. Bhuyan; C.H. Lenzi; M. Dutra; C. Gonzalez-Boquera; M. Centelles; X. Viñas

Physics Letters B (Apr 2020)

GW170817 constraints analyzed with Gogny forces and momentum-dependent interactions

O. Lourenço,
M. Bhuyan,
C.H. Lenzi,
M. Dutra,
C. Gonzalez-Boquera,
M. Centelles,
X. Viñas

Affiliations

O. Lourenço: Departamento de Física, Instituto Tecnológico de Aeronáutica, DCTA, 12228-900, São José dos Campos, SP, Brazil; Corresponding author.
M. Bhuyan: Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; Institute of Research Development, Duy Tan University, Da Nang 550000, Vietnam
C.H. Lenzi: Departamento de Física, Instituto Tecnológico de Aeronáutica, DCTA, 12228-900, São José dos Campos, SP, Brazil
M. Dutra: Departamento de Física, Instituto Tecnológico de Aeronáutica, DCTA, 12228-900, São José dos Campos, SP, Brazil
C. Gonzalez-Boquera: Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB), Facultat de Física, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain
M. Centelles: Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB), Facultat de Física, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain
X. Viñas: Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB), Facultat de Física, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain

Journal volume & issue: Vol. 803

Abstract

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A set of equations of state obtained from finite-range Gogny forces and momentum-dependent interactions is used to investigate the recent observation of gravitational waves from the binary neutron star merger GW170817 event. For this set of interactions, we have calculated the neutron star tidal deformabilities (related to the second Love number), the mass-radius diagram, and the moment of inertia (I). The I-Love relation has been verified. We also have found strong correlations among the tidal deformability of the canonical neutron star, its radius, and the derivatives of the nuclear symmetry energy at the saturation density. Most of the obtained results are located within the constraints of the tidal deformabilities extracted from the GW170817 detection. Keywords: Equation of state, Finite-range interactions, Neutron star, Tidal deformability, Moment of inertia

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/physics-letters-b/

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