What is the difference between static and stationary?
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What is the difference between static and stationary?
As adjectives the difference between stationary and static is that stationary is not moving while static is unchanging; that cannot or does not change.
What is a static black hole?
Schwarzschild Black Hole, otherwise known as a ‘static black hole’, does not rotate and has no electric charge. It is characterised solely by its mass. Kerr Black Hole is a more realistic scenario. This is a rotating black hole with no electrical charge. Charged Black Hole can be of two types.
Are there stationary black holes?
The event horizon is defined as the outer boundary of the region from which there is no escape. For stationary black holes this surface is at a fixed location in space, but more generally the horizon is dynamical; it can grow, change shape, oscillate. In particular, a horizon can be born.
What is the difference between a rotating and non rotating black hole?
Rotating black holes have a non zero angular momentum and may or may not have charge. Non rotating black hole does not have angular momentum but may or may not have charge.
What does static space mean?
In general relativity, a spacetime is said to be static if it does not change over time and is also irrotational. It is a special case of a stationary spacetime, which is the geometry of a stationary spacetime that does not change in time but can rotate.
What is a static metric?
I read that a static metric is one which has a timelike Killing vector (so it is stationary) AND this Killing vector is orthogonal to a family of hypersurface (of dimension n-1 is n is the dimension of my manifold).
Does black hole change its position?
In a more precise formulation, the change-over is more gradual. In a way, the time direction is bent more and more inward as you get closer to the black hole. As the bending is strong enough to prevent any object from moving in any direction but inwards, you cross the horizon.