Anisotropic compact stars: Constraining model parameters to account for physical features of tidal Love numbers - Archive ouverte HAL
Article Dans Une Revue Annals Phys. Année : 2021

Anisotropic compact stars: Constraining model parameters to account for physical features of tidal Love numbers

Shyam Das
  • Fonction : Auteur
Saibal Ray
  • Fonction : Auteur
K.K. Nandi
  • Fonction : Auteur
B.K. Parida
  • Fonction : Auteur

Résumé

In this paper, we develop a new class of models for a compact star with anisotropic stresses inside the matter distribution. By assuming a linear equation of state for the anisotropic matter composition of the star we solve the Einstein field equations. In our approach, for the interior solutions we use a particular form of the an satz for the metric function grr. The exterior solution is assumed as the Schwarzschild metric and is joined with the interior metric obtained across the boundary of the star. These matching of the metrices along with the condition of the vanishing radial pressure at the boundary lead us to determine the model parameters. The physical acceptability of the solutions has verified by making use of the current estimated data available from the pulsar 4U160852. Thereafter, assuming anisotropy due to tidal effects we calculate the Love numbers from our model and compare the results with the observed compact stars, viz. KS1731260, 4U160852, 4U1724207, 4U182030, SAXJ1748.92021 and EXO1745268. The overall situation confirms physical viability of the proposed approach, which can shed new light on the interior of the compact relativistic objects. •Investigation of a compact star with anisotropic stresses.•We assume a linear equation of state to solve the Einstein field equations.•Love numbers are calculated from the presented model.•We have compared the results with the observed compact stars.•Solutions provide a physical viability of the proposed approach.

Dates et versions

hal-03157109 , version 1 (02-03-2021)

Identifiants

Citer

Shyam Das, Saibal Ray, Maxim Khlopov, K.K. Nandi, B.K. Parida. Anisotropic compact stars: Constraining model parameters to account for physical features of tidal Love numbers. Annals Phys., 2021, 433, pp.168597. ⟨10.1016/j.aop.2021.168597⟩. ⟨hal-03157109⟩
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