Strange stars in the framework of higher curvature gravity Article Swipe
Sudan Hansraj
,
Megandhren Govender
,
Lushen Moodly
,
Ksh. Newton Singh
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1103/physrevd.105.044030
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1103/physrevd.105.044030
We study the influence of higher curvature effects on stellar structure and conclude that the properties of stars are greatly impacted when such terms are dynamic. In particular the surface gravitational redshift which is connected to the equation of state and also the mass-radius ratio differs greatly from the corresponding values in general relativity as evidenced through our empirical comparisons. A model of a superdense star with strange star equation of state is constructed within the framework of the Einstein--Gauss--Bonnet theory. Under these assumptions large classes of solutions are admitted by the field equations. We isolate a particular class with the ansatz of the Vaidya--Tikekar superdense star spatial gravitational potential. The model is found to satisfy elementary requirements for physical applicability and stability. The parameter values chosen are consistent with observed star models. A significant effect of the higher curvature terms is to reduce the speed of sound and to drastically reduce the values of the surface gravitational redshift compared to the Einstein counterpart. These latter results have implications for interpretations of observations in relativistic astrophysics which are often made against the background of the standard general theory of relativity.
Related Topics
Concepts
Physics
General relativity
Ansatz
Equation of state
Curvature
Stars
Redshift
Gravitational redshift
Gravitation
Einstein
Astrophysics
Star (game theory)
Gravitational field
Neutron star
Gravitational collapse
RADIUS
Theoretical physics
Classical mechanics
Mathematical physics
Quantum mechanics
Geometry
Mathematics
Computer security
Computer science
Galaxy
Metadata
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.1103/physrevd.105.044030
- OA Status
- green
- References
- 72
- Related Works
- 20
- OpenAlex ID
- https://openalex.org/W3194103608
All OpenAlex metadata
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https://openalex.org/W3194103608Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1103/physrevd.105.044030Digital Object Identifier
- Title
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Strange stars in the framework of higher curvature gravityWork title
- Type
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-02-14Full publication date if available
- Authors
-
Sudan Hansraj, Megandhren Govender, Lushen Moodly, Ksh. Newton SinghList of authors in order
- Landing page
-
https://doi.org/10.1103/physrevd.105.044030Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
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https://arxiv.org/pdf/2003.04568Direct OA link when available
- Concepts
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Physics, General relativity, Ansatz, Equation of state, Curvature, Stars, Redshift, Gravitational redshift, Gravitation, Einstein, Astrophysics, Star (game theory), Gravitational field, Neutron star, Gravitational collapse, RADIUS, Theoretical physics, Classical mechanics, Mathematical physics, Quantum mechanics, Geometry, Mathematics, Computer security, Computer science, GalaxyTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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20Other works algorithmically related by OpenAlex
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