Studies an analytic model of a spherically symmetric compact object in Einsteinian gravity
Creators
- 1. Laboratory of High Energy Physics and Condensed Matter (LPHEMaC), Department of Physics, Faculty of Sciences Aïn Chock, University of Hassan II, Mâarif, Casablanca (Morocco)
- 2. Abdus Salam International Centre for Theoretical Physics, Miramare, Trieste (Italy)
- 3. Department of Physics, Faculty of Sciences, University of Ibn Tofail, Kenitra (Morocco)
Description
We propose a new compact stellar object model existing in a space filled with a distribution of anisotropic fluid matter for stellar configuration exposed to the hydrostatic equilibrium. An analytical solution was obtained using dark-energy (DE), which is characterized by a equation of state (EoS) of the type p=γρ−ρ corresponding to the external Schwarzschild vacuum solution through a thin envelope. We have imposed a collective function based on an adjustable coefficient to solve the Einstein field equations (EFEs). We investigate the general physical characteristics of high-density astrophysical objects based on the required solutions, with the inside structure of the stellar objects, such as the energy conditions, stability analysis, mass function, surface redshift function, velocity of sound and compactness of stellar objects through theoretical expression as well as graphic plots. In terms of our results, the physical behavior of this model can be used to model ultra-compact objects.
Availability note (English)
Available from: http://dx.doi.org/10.1140/epjc/s10052-020-7825-xAdditional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. C, Particles and Fields (Online)
- Journal Volume
- 80
- Journal Issue
- 3
- Journal Page Range
- p. 1-12
- ISSN
- 1434-6052
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 51053727
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ANALYTICAL SOLUTION; ANISOTROPY; COMPRESSIBILITY; DENSITY; EINSTEIN FIELD EQUATIONS; EQUATIONS OF STATE; EQUILIBRIUM; FLUIDS; GENERAL RELATIVITY THEORY; GRAVITATION; NONLUMINOUS MATTER; RED SHIFT; REST MASS; SCHWARZSCHILD METRIC; SIZE; SPATIAL DISTRIBUTION; STABILITY; STAR MODELS; STARS; SURFACES
- Descriptors DEC
- DISTRIBUTION; EQUATIONS; FIELD EQUATIONS; FIELD THEORIES; MASS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; MATTER; MECHANICAL PROPERTIES; METRICS; PHYSICAL PROPERTIES; RELATIVITY THEORY
Optional Information
- Notes
- AID: 258