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Astrophysics and Space Science

, Volume 356, Issue 1, pp 103–110 | Cite as

On dynamical instability of spherical star in f(R,T) gravity

  • Ifra Noureen
  • M. Zubair
Original Article

Abstract

This work is based on stability analysis of spherically symmetric collapsing star surrounding in locally anisotropic environment in f(R,T) gravity, where R is Ricci scalar and T corresponds to the trace of energy momentum tensor. Field equations and dynamical equations are presented in the context of f(R,T) gravity. Perturbation scheme is employed on dynamical equations to find the collapse equation. Furthermore, condition on adiabatic index Γ is constructed for Newtonian and post-Newtonian eras to address instability problem. Some constraints on physical quantities are imposed to maintain stable stellar configuration. The results in this work are in accordance with f(R) gravity for specific case.

Keywords

Collapse f(R,T) gravity Dynamical equations Instability range Adiabatic index 

Notes

Acknowledgements

We would like to thank the anonymous referee for constructive comments.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Department of MathematicsUniversity of Management and TechnologyLahorePakistan
  2. 2.Department of MathematicsCOMSATS Institute of Information TechnologyLahorePakistan

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