A new parametric class of solutions of a charged anisotropic compact star via Bardeen exterior geometry

Satyanarayana Gedela, Neeraj Pant, Jaya Upreti, R. P. Pant

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In this paper, we provide a new parametric class of solutions to Einstein-Maxwell field equations to study the relativistic structure of a compact star via embedding class I condition. The interior of the star is delineated by Karmarkar condition and at the boundary of the star, we match the class of solutions with Bardeen and Reissner-Nordstrom exterior spacetimes. We assume one of the metric potentials as e?(r) = 1 + c 1r2cscn(1 + c 2r2) to obtain other metric potential. Subsequently, we solve Maxwell field equations. We verify and compare all the thermodynamic properties like matter density, anisotropy, radial and tangential pressures, compactification factor, energy conditions, and stability conditions, namely, adiabatic index, balancing forces via modified TOV equations, Harrision-Zeldovich criteria, casualty condition, Herrera cracking condition, etc., of our class of charged solutions. All the physical and stability conditions are with the viable trend throughout the interior of the stellar object. For a suitable range of values of n and parameters, it is depicted from this study that the present class of charged solutions yields effective results to obtain realistic and viable modeling of the neutron star in EXO 1785-248 in both the Bardeen and Reissner-Nordstrom exterior spacetimes.

Original languageEnglish
Article number2150055
JournalModern Physics Letters A
Volume36
Issue number8
DOIs
Publication statusPublished - 14 Mar 2021
Externally publishedYes

Keywords

  • General relativity
  • anisotropy
  • compact stars
  • embedding class I
  • exact solution

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics

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