From neutron stars to highly compact configurations

O. Bustos, E. Fuenmayor, P. León, E. Contreras

Producción científica: Contribución a una revistaArtículorevisión exhaustiva


In this work, we deliver a comprehensive analysis of anisotropic fluids supporting self-gravitating spheres. Our research is grounded on anisotropic fluids that adhere to a well-behaved polytropic equation of state, with an appropriate anisotropy inspired by the conformally flat condition. We perform numerical integration of the generalized Lane–Emden equation over a broad spectrum of parameters, assessing the feasibility of the derived solution as a model for compact celestial objects. The findings are presented in color-coded diagrams, denoting the number of conditions met by the solutions based on the value of the parameters involved. Our study reveals that anisotropy is a pivotal factor in the interpretation of these models. Notably, the compactness of the solution falls within a range where the lower limit corresponds to neutron stars, and the upper limit relates to extremely compact configurations approaching Buchdhal’s limit.

Idioma originalInglés
Número de artículo790
PublicaciónEuropean Physical Journal Plus
EstadoPublicada - 5 sep. 2023


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