Nonspherically Symmetric Collapse in Asymptotically AdS Spacetimes.

Area of Science:

• Numerical relativity
• Black hole formation
• General relativity

Background:

• Gravitational collapse is a fundamental process in astrophysics.
• Asymptotic anti-de Sitter spacetimes are relevant for theoretical physics and quantum gravity.
• Spherically symmetric solutions are often used as a simplification.

Purpose of the Study:

• To investigate the effects of non-spherical symmetry on gravitational collapse.
• To numerically simulate black hole formation in five-dimensional anti-de Sitter spacetimes.
• To compare collapse dynamics with spherically symmetric cases.

Main Methods:

• Numerical simulation of Einstein's equations.
• Utilizing initial data from a massless real scalar field.
• Solving in five spacetime dimensions with a negative cosmological constant.

Main Results:

• Obtained nonspherically symmetric solutions forming two distinct black holes.
• Demonstrated faster collapse for nonspherical configurations compared to spherical ones of equal mass and compactness.
• Showed that less mass is required for collapse within a fixed time for asymmetric solutions.

Conclusions:

• Non-spherical symmetry accelerates gravitational collapse.
• Asymmetric initial conditions can lead to more efficient black hole formation.
• These findings have implications for understanding black hole dynamics in curved spacetimes.