A causal Schwarzschild-de Sitter interior solution by gravitational decoupling
L. GabbanelliDepartament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, SpainJ. OvalleDepartamento de Física, Universidad Simón Bolívar, AP 89000, Caracas, 1080, VenezuelaA. SotomayorDepartamento de Matemáticas, Universidad de Antofagasta, Antofagasta, ChileZ. StuchlikInstitute of Physics and Research Centre of Theoretical Physics and Astrophysics, Faculty of Philosophy and Science, Silesian University in Opava, 746 01, Opava, Czech RepublicR. CasadioDipartimento di Fisica e Astronomia, Alma Mater Università di Bologna, via Irnerio 46, 40126, Bologna, Italy
2019en
ABI
Аннотация
We employ the minimal geometric deformation approach to gravitational decoupling (MGD-decoupling) in order to build an exact anisotropic version of the Schwarzschild interior solution in a space-time with cosmological constant. Contrary to the well-known Schwarzschild interior, the matter density in the new solution is not uniform and possesses subluminal sound speed. It therefore satisfies all standard physical requirements for a candidate astrophysical object.
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