2019

A General Relativistic Approach to Small-Scale Structure Formation

Dey, Dipanjan, Kocherlakota, Prashant, Joshi, Pankaj S.

Understand

We treat here general relativistically the issue of galaxy formation, which is a major problem in cosmology.

  • While the current models use a top-hat collapse model, coupled with Newtonian virialization technique to balance the gravitationally collapsing matter cloud into a galaxy, we present here a general relativistic toy model to achieve such a purpose.
  • We consider a relativistic gravitational collapse that begins from physically reasonable and non-singular initial conditions and that tends to an equilibrium configuration in asymptotic time.
  • The matching of different spacetime regions is explicitly demonstrated to establish the feasibility of the model.

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