Institute of Theoretical Physics · Faculty of Mathematics and Physics, Charles University
Phys. Rev. Lett. 127(1), 5 (2021)
We report on a numerical study of gravitational waves undergoing gravitational collapse due to their self-interaction. We consider several families of asymptotically flat initial data which, similar to the well-known Choptuik's discovery, can be fine-tuned between dispersal into empty space and collapse into a black hole. We find that near-critical spacetimes exhibit behavior similar to scalar-field collapse: For different families of initial data, we observe universal "echoes" in the form of irregularly repeating, approximate, scaled copies of the same piece of spacetime.
@article{UTF940,
author = {Ledvinka, T. and Khirno, A.},
title = {{Universality of Curvature Invariants in Critical Vacuum Gravitational Collapse}},
journal = {Phys. Rev. Lett.},
volume = {127},
number = {1},
pages = {5},
year = {2021},
month = {7},
doi = {10.1103/PhysRevLett.127.011104},
}