“School of Astronomy”

Back to Papers Home
Back to Papers of School of Astronomy

Paper   IPM / Astronomy / 12882
School of Astronomy
  Title:   The spherical perfect fluid collapse in the cosmological background
  Author(s): 
1.  Rahim Moradi
2.  Javad Taghizadeh Firouzjaee
3.  Reza Mansouri
  Status:   Published
  Journal: Modern Physics D
  Vol.:  21
  Year:  2012
  Supported by:  IPM
  Abstract:
We have constructed a spherically symmetric structure model within an otherwise FRW universe filled with perfect fluid and studied its quasi-local characteristics. This is done by using the Lemaître solution of the Einstein equations and by suggesting an algorithm to integrate it numerically. The result shows how a dynamical black hole evolves within the FRW universe, its decoupling from the expanding parts of the model, the structure of its space-like apparent horizon, the limiting case of the dynamical horizon tending to a slowly evolving horizon, and the decreasing mass in-fall to the black hole. The quasi-local features of this cosmological black hole may not be inferred from the Newtonian approximation although the gravity outside the structure is very weak.

Download TeX format
back to top
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
scroll left or right