What is the Schwarzschild radius for a black hole?

Schwarzschild radius, also called gravitational radius, the radius below which the gravitational attraction between the particles of a body must cause it to undergo irreversible gravitational collapse. This phenomenon is thought to be the final fate of the more massive stars (see black hole).

What will be the radius of its event horizon when it collapses into a black hole in kilometers?

about 1012 kilometers
If the entire Galaxy could collapse to a black hole, it would be only about 1012 kilometers in radius—about a tenth of a light year. Smaller masses have correspondingly smaller horizons: for Earth to become a black hole, it would have to be compressed to a radius of only 1 centimeter—less than the size of a grape.

What happens when mass enters a black hole?

When matter falls into or comes closer than the event horizon of a black hole, it becomes isolated from the rest of space-time. It can never leave that region. Once inside the black hole’s event horizon, matter will be torn apart into its smallest subatomic components and eventually be squeezed into the singularity.

How does the Schwarzschild radius of a black hole depend on its mass?

The Schwarzschild radius is directly proportional to the mass of a singularity. A black hole is defined as ANY object which is smaller than its Schwarzschild radius. For instance, take an astronomy professor with a mass of M = 70 kilograms.

How do you calculate the mass of a black hole?

Since the radius of a black hole is R = 3 x M, the mass of the black hole is 43 million = 3 x M, or M = 14 million solar masses.

What is the radius of the event horizon known as?

Schwarzschild radius
The event horizon radius is also called the Schwarzschild radius.

What is the maximum radius and mass it can have before collapsing into a black hole?

So, for a star with the same mass as our Sun, the Schwarzschild radius is about 3 km, or about 2 miles. In general, stars with final masses in the range 2 to 3 solar masses are believed to ultimately collapse to a black hole.

What happens when a black hole collapses?

All the material that has ever fallen into the black hole gets compressed into a ball not much bigger than this. Perfectly microscopic, but definitely not infinitely tiny. This resistance to continued compression eventually forces the material to un-collapse (i.e., explode), making black holes only temporary objects.

What happens in a black hole stays in a black hole?

Once the core is smaller than the event horizon, not even light can escape. The core continues collapsing until it takes up virtually no space. The star is a singularity, a point mass of infinitely high density inside a black hole. Space and time are highly distorted inside a black hole.

What is the Schwarzschild radius of the observable universe?

The observable universe ‘s mass has a Schwarzschild radius of approximately 13.7 billion light-years. Any object whose radius is smaller than its Schwarzschild radius is called a black hole.

What is the radius of a black hole called?

Black hole classification by Schwarzschild radius. Any object whose radius is smaller than its Schwarzschild radius is called a black hole. The surface at the Schwarzschild radius acts as an event horizon in a non-rotating body (a rotating black hole operates slightly differently).

What is the size of a supermassive black hole?

Supermassive black hole. When a body of this density has grown to around 136 million solar masses (1.36 × 10 8 ) M☉, its physical radius would be overtaken by its Schwarzschild radius, and thus it would form a supermassive black hole.

What is the nuclear density of a stellar black hole?

If one accumulates matter at nuclear density (the density of the nucleus of an atom, about 10 18 kg/m 3; neutron stars also reach this density), such an accumulation would fall within its own Schwarzschild radius at about 3 M ☉ and thus would be a stellar black hole.