English

A generalized Finch-Skea class one static solution

General Physics 2019-05-22 v1

Abstract

In the present article, we discuss relativistic anisotropic solutions of the Einstein field equation for the spherically symmetric line element under the class I condition. To do so we apply the embedding class one technique using Eisland condition. Within this approach, one arrives at a particular differential equation that links the two metric components eνe^{\nu} and eλe^{\lambda}. In order to obtain the full space-time description inside the stellar configuration we ansatz the generalized form of metric component grrg_{rr} corresponding to the Finch-Skea solution. Once the space-time geometry is specified we obtain the complete thermodynamic description i.e. the matter density ρ\rho, the radial, and tangential pressures prp_r and ptp_t, respectively. Graphical analysis shows that the obtained model respects the physical and mathematical requirements that all ultra-high dense collapsed structures must obey. The MRM-R diagram suggests that the solution yields stiffer EoS as parameter nn increases. The MIM-I graph is in agreement with the concepts of Bejgar et al. \cite{bej} that the mass at ImaxI_{max} is lesser by few percent (for this solution 3%\sim 3\%) from MmaxM_{max}. This suggests that the EoSs is without any strong high-density softening due to hyperonization or phase transition to an exotic state.

Keywords

Cite

@article{arxiv.1904.11795,
  title  = {A generalized Finch-Skea class one static solution},
  author = {K. N. Singh and S. K. Maurya and Farook Rahaman and Francisco Tello-Ortiz},
  journal= {arXiv preprint arXiv:1904.11795},
  year   = {2019}
}

Comments

14 figures, Accepted in European Physical Journal C

R2 v1 2026-06-23T08:50:22.124Z