Core–envelope model of an anisotropic strange star with density-dependent bag (B) parameter

Making use of a particular solution for a class of relativistic compact stars, we develop a core–envelope model where the core region is assumed to be composed of strange matter admitting an equation of state p = 1 3 ( ρ - 4 B ) . In our model, we assume the bag parameter B of the MIT bag model to b...

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Bibliographic Details
Published inIndian journal of physics Vol. 97; no. 8; pp. 2273 - 2287
Main Authors Das, B., Goswami, K. B., Chattopadhyay, P. K., Sharma, R.
Format Journal Article
LanguageEnglish
Published New Delhi Springer India 01.07.2023
Springer Nature B.V
Subjects
Anisotropy
Astrophysics and Astroparticles
Configurations
Density
Equations of state
Mathematical models
Original Paper
Parameters
Physics
Physics and Astronomy
Strange matter
Bag parameter
Compact star
Anisotropy
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Summary:Making use of a particular solution for a class of relativistic compact stars, we develop a core–envelope model where the core region is assumed to be composed of strange matter admitting an equation of state p = 1 3 ( ρ - 4 B ) . In our model, we assume the bag parameter B of the MIT bag model to be density-dependent. For an anisotropic stellar configuration with two separate regions—the quark core-enveloped by baryonic matter—we analyse the effects of density and anisotropy on the bag value. Moreover, the effects of the background geometry of the configuration are studied. The physical features of the model are investigated.
ISSN:0973-1458
0974-9845
DOI:10.1007/s12648-023-02586-2