Charged anisotropic strange stars in Finslerian geometry
- 1. Department of Physics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, West Bengal (India)
- 2. Department of Physics, Government College of Engineering and Ceramic Technology, Kolkata, West Bengal (India)
- 3. Department of Mathematics, Jadavpur University, Kolkata, West Bengal (India)
Description
We investigate a simplified model of the strange stars in the framework of Finslerian geometry, composed of charged fluid. It is considered that the fluid consisting of three flavor quarks including a small amount of non-interacting electrons to maintain the chemical equilibrium and assumed that the fluid is compressible by nature. To obtain the simplified form of the charged strange star we have considered constant flag curvature. Based on geometry, we have developed the field equations within the localized charge distribution. We consider that the strange quarks distributed within the stellar system are complied with the MIT bag model type of equation of state (EOS) and the charge distribution within the system follows a power law. We represent the exterior spacetime by the Finslerian Ressiner-Nordström space-time. The maximum anisotropic stress is obtained at the surface of the system. Whether the system is in equilibrium or not, has been examined with respect to the Tolman–Oppenheimer–Volkoff (TOV) equation, Herrera cracking concept, different energy conditions and adiabatic index. We obtain that the total charge is of the order of 10 C and the corresponding electric field is of around 10 V/m. The central density and central pressure vary inversely with the charge. Varying the free parameter (charge constant) of the model, we find the generalized mass-radius variation of strange stars and determine the maximum limited mass with the corresponding radius. Furthermore, we also considered the variation of mass and radius against central density respectively.
Availability note (English)
Available from: http://dx.doi.org/10.1140/epjc/s10052-019-7054-3Additional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. C, Particles and Fields (Online)
- Journal Volume
- 79
- Journal Issue
- 7
- Journal Page Range
- p. 1-15
- ISSN
- 1434-6052
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 51020308
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ADIABATIC PROCESSES; ANISOTROPY; BAG MODEL; CHARGE DENSITY; DENSITY; EINSTEIN-MAXWELL EQUATIONS; ELECTRIC CHARGES; ELECTRIC FIELDS; EQUATIONS OF STATE; EQUILIBRIUM; FLAVOR MODEL; FLUIDS; METRICS; REST MASS; SIZE; SPACE-TIME; STAR MODELS; STARS; STRANGENESS; STRESSES
- Descriptors DEC
- COMPOSITE MODELS; EQUATIONS; EXTENDED PARTICLE MODEL; FIELD EQUATIONS; MASS; MATHEMATICAL MODELS; PARTICLE MODELS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; QUARK MODEL
Optional Information
- Notes
- AID: 547