2021/02/28 by Tomáš Ledvinka, Anton Khirnov · 1 voice · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #gr-qc
paper · pdf · doi:10.1103/physrevlett.127.011104
published as Phys. Rev. Lett. 127, 011104 (2021) · 5 pages, 3 figures. This updated version matches the published letter. The changes include the values of echo scaling ratios, simplified initial data description and a more readable Fig. 2
openalex publication_date 2021/07/02 · arxiv created 2022/07/24 · arxiv updated 2022/07/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 the collapse of scalar field: 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.