• R Banerji

      Articles written in Pramana – Journal of Physics

    • Relativistic star clusters with high central redshift

      M C Durgapal P S Rawat R Banerji

      More Details Abstract Fulltext PDF

      Collisionless star clusters in dynamical equilibrium are of current interest in general relativity and astrophysics. A step-function distribution is chosen for star clusters. The corresponding equation of state is analogous to a Fermi-gas equation. These clusters are found to be pulsationally unstable for a central redshift ofZc ⩾ 0·54. Further, a model of clusters is developed in which the core has an extremely relativistic equation of state. These structures are unstable forZc ⩾ 2·55 when we use Chandrasekhar’s technique to study their pulsational stability.

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