According to Einstein’s theory of gravity, black holes have only a small handful of distinguishing characteristics. Quantum theory implies they may have more. Now an experimental search finds that…

Future gravitational wave observatories open a unique avenue to study the environments surrounding black holes. Intermediate or extreme mass ratio inspirals will spend thousands to millions of cycles ...

Strong gravitational lensing occurs when photons pass through the vicinity of a black hole. We investigate this phenomenon in the context of a gravitational-wave event, specifically when a black hole ...

Is the universe flat and infinite, or something more complex? We can’t say for sure, but a new search strategy is mapping out the subtle signals that would reveal if the universe had a shape.

Gravitational waves induced by scalar perturbations with a broken power-law peak, Li, Chong-Zhi, Yuan, Chen, Huang, Qing-Guo

The Penrose process, a process that transfers energy from a black hole to infinity, together with the Ba\~nados-Silk-West (BSW) mechanism, a mechanism that uses collisions of ingoing particles at the ...

Astrophysical environments are ubiquitous in the Universe; from accretion disks around black holes to galactic dark matter halos, distributions of astrophysical material veil the vast majority of Cosm...