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Paper   IPM / Astronomy / 13339
School of Astronomy
  Title:   Gravitational collapse in the AdS background and the black hole formation
1.  A. Alireza Allahyari
2.  J. Firouzjaee
3.  R. Mansouri
  Status:   Published
  Journal: Int. Journal of Modern Physics D
  Vol.:  25
  Year:  2016
  Supported by:  IPM
We study the time evolution of the Misner-Sharp mass and the apparent horizon for gravitational collapse of a massless scalar field in AdS5 space-time for both cases of narrow and broad waves by numerically solving the Einstein's equations coupled to a massless scalar field. It turns out that the Misner-Sharp mass is everywhere constant except for a rapid change across a thin shell, being characterized by stationary point of the density profile. By studying the evolution of the apparent horizon, signaling the formation of a black hole, at different times we see how asymptotically an event horizon forms. The dependence of the thermalization time on the radius of the initial black hole event horizon is also studied.

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