As first discovered by Choptuik, the black hole threshold in the space of initial data for
general relativity shows both surprising structure and surprising simplicity. Universality …

In general relativity black holes can be formed from regular initial data that do not contain a
black hole already. The space of regular initial data for general relativity therefore splits …

We consider general relativistic homogeneous gravitational collapses for dust and radiation.
We show that replacing the density profile with an effective density justified by some …

We develop here a new procedure within Einstein's theory of gravity to generate equilibrium
configurations that result as the final state of gravitational collapse from regular initial …

We investigate the key physical features that cause the development of a naked singularity,
rather than a black hole, as the end state of spherical gravitational collapse. We show that …

We give a model of the higher-dimensional spherically symmetric gravitational collapse of a
dust cloud including the perturbative effects of quantum gravity. The n (≥ 5)-dimensional …

Gravitational collapse is one of the most fruitful subjects in gravitational physics. It is well
known that singularity formation is inevitable in complete gravitational collapse. It was …

We investigate here spherically symmetric gravitational collapse in a space-time with an
arbitrary number of dimensions and with a general type I matter field, which is a broad class …

We discuss the scalar mode of gravitational waves emerging in the context of F (R) gravity
by taking into account the chameleon mechanism. Assuming a toy model with a specific …

In 1990, based on numerical and formal asymptotic analysis, Ori and Piran predicted the
existence of selfsimilar spacetimes, called relativistic Larson-Penston solutions, that can be …