Conveners
(DTP) M3-9 Strong Gravity and Black Holes | Gravité forte et trous noirs (DPT)
- Hari Kunduri (McMaster University, Mathematics and Physics)
What is a quantum black hole? How does it form and how long does it last? I will provide an answer to these questions via an effective equation that describes gravitational collapse of dust with quantum corrections. Solving this equation reveals that black holes end in a shock wave after a time of order mass squared.
I will discuss a class of time-dependent, asymptotically flat and spherically symmetric metrics which model gravitational collapse in quantum gravity developed by myself and the other listed authors. Motivating the work was the intuition that quantum gravity should not exhibit curvature singularities and indeed, the metrics lead to singularity resolution with horizon formation and evaporation...
In general, black holes interact with external matter and fields. A four-dimensional static black hole within a static external axisymmetric gravitational field can be described by a Weyl solution of the Einstein equations. These results can be extended to higher dimensions using the generalized Weyl form. Various studies have been devoted to investigate the properties of the distorted black...
In recent years, with the progress in gravitational wave astronomy and subsequent importance of binary black hole mergers, there has been an increased focus on numerical simulations of these events. However, the most common surface of interest in black holes—the event horizon—is difficult to track numerically, as it is defined teleologically from future boundary conditions. Instead, the...
Self-intersecting marginally outer-trapped surfaces (MOTSs) have been found to play a vital role in binary black hole merger processes through numerical simulations [Pook-Kolb et. al. arXiv:1903.05626]. The search for such exotic MOTSs can also be found in analytical black hole solutions, such as the simplest (Schwarzschild) black hole [Booth et. al., arXiv:2005.05350]. Ongoing work continues...
For the last few decades and especially since the first detection of gravitational waves, black hole mergers have been a core research area in general relativity. However, the process by which two black hole horizons merge is only now starting to be well-understood. In numerical studies of apparent horizon evolution, self-intersecting marginally outer-trapped surfaces (MOTS) were found and...
