Spherical conformal models for compact stars

We consider spherical exact models for compact stars with anisotropic pressures and a conformal symmetry. The conformal symmetry condition generates an integral relationship between the gravitational potentials. We solve this condition to find a new anisotropic solution to the Einstein field equatio...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2017-10, Vol.77 (10), p.1-8, Article 713
Main Authors: Takisa, P. Mafa, Maharaj, S. D., Manjonjo, A. M., Moopanar, S.
Format: Article
Language:English
Subjects:
Anisotropy
Astronomy
Astrophysics and Cosmology
Doppler effect
Einstein equations
Elementary Particles
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Red shift
Regular Article - Theoretical Physics
String Theory
Symmetry
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Summary:We consider spherical exact models for compact stars with anisotropic pressures and a conformal symmetry. The conformal symmetry condition generates an integral relationship between the gravitational potentials. We solve this condition to find a new anisotropic solution to the Einstein field equations. We demonstrate that the exact solution produces a relativistic model of a compact star. The model generates stellar radii and masses consistent with PSR J1614-2230, Vela X1, PSR J1903+327 and Cen X-3. A detailed physical examination shows that the model is regular, well behaved and stable. The mass–radius limit and the surface red shift are consistent with observational constraints.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-017-5293-8