9 citations · 19 across the 6 of their papers we have counts for
6 papers
Gravitational Waves from Accretion Disks: Turbulence, Mode Excitation and Prospects for Future Detectors
Chen Yuan, Vitor Cardoso, Francisco Duque +1
We study gravitational-wave emission by turbulent flows in accretion disks around spinning black holes or neutron stars. We aim to understand how turbulence can stochastically exci…
Einstein Cluster as Central Spiky Distribution of Galactic Dark Matter
Kei-ichi Maeda, Vitor Cardoso, Anzhong Wang
Using the Einstein cluster models, we construct a fully relativistic, spherically symmetric, spiky structure of matter distribution near a supermassive black hole. We introduce and…
Forward Ray Tracing and Hot Spots in Kerr Spacetime
Lihang Zhou, Zhen Zhong, Yifan Chen +1
Hotspots, often characterized as pointlike emissions, frequently appear near black holes with significantly enhanced luminosity compared to the surrounding accretion flow. Notably,…
Black holes, multiple propagation speeds, and energy extraction
Vitor Cardoso, Shinji Mukohyama, Naritaka Oshita +1
The Standard Model of particle physics predicts the speed of light to be a universal speed of propagation of massless carriers. However, other possibilities exist -- including Lore…
Radiation reaction in weakly magnetized black holes: can the tail term be ignored in the strong field regime?
João S. Santos, Vitor Cardoso, José Natário
We study radiation from charged particles in circular motion around a Schwarzschild black hole immersed in an asymptotically uniform magnetic field. In curved space, the radiation…
On the physical significance of black hole quasinormal mode spectra instability
Vitor Cardoso, Shilpa Kastha, Rodrigo Panosso Macedo
It has been shown, via specific examples and a pseudospectrum analysis, that the black hole quasinormal spectra are unstable. The implication of such a result for gravitational-wav…