Radiating stars with composite matter distributions

In this paper we study the junction conditions for a generalised matter distribution in a radiating star. The internal matter distribution is a composite distribution consisting of barotropic matter, null dust and a null string fluid in a shear-free spherical spacetime. The external matter distribut...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2021-04, Vol.81 (4), p.1-11, Article 366
Main Authors: Maharaj, Sunil D., Brassel, Byron P.
Format: Article
Language:English
Subjects:
Anisotropy
Astronomy
Astrophysics and Cosmology
Big Bang theory
Boundary conditions
Elementary Particles
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
Stellar surfaces
String Theory
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Summary:In this paper we study the junction conditions for a generalised matter distribution in a radiating star. The internal matter distribution is a composite distribution consisting of barotropic matter, null dust and a null string fluid in a shear-free spherical spacetime. The external matter distribution is a combination of a radiation field and a null string fluid. We find the boundary condition for the composite matter distribution at the stellar surface which reduces to the familiar Santos result with barotropic matter. Our result is extended to higher dimensions. We also find the boundary condition for the general spherical geometry in the presence of shear and anisotropy for a generalised matter distribution.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-021-09163-z