I don't have the details at hand, but any perturbation of the EH fades away very quickly, by emitting gravitational waves. It's a matter of seconds for spacetime to calm down and the EH being spherical again.so wouldn't the event horizon not be a sphere, but rather a wavy dynamic structure?
The event horizon is the boundary surrounding a black hole where the escape velocity exceeds the speed of light. This means that anything inside the event horizon, including light, cannot escape the gravitational pull of the black hole.
No, the event horizon is a fixed boundary and does not move. It is determined by the mass and size of the black hole and remains constant unless the black hole gains or loses mass.
If an object crosses the event horizon, it is pulled towards the singularity at the center of the black hole and cannot escape. The object will experience extreme gravitational forces and will eventually be crushed into a singularity.
The event horizon itself is not visible, as it marks the point where light can no longer escape. However, the accretion disk of material around a black hole can sometimes be seen as it approaches the event horizon and heats up, emitting light and other forms of radiation.
The size of the event horizon is determined by the mass and size of the black hole, so it can change if the black hole gains or loses mass. However, this change is not visible to outside observers and does not affect the event horizon's function as the boundary of a black hole.