Table of Contents
- 1 What is the radius of the event horizon of that black hole?
- 2 What is the event horizon of a black hole and how is it related to the Schwarzschild radius?
- 3 How do you find the radius of an event horizon?
- 4 What the event horizon of a black hole is?
- 5 What is the diameter of the event horizon?
- 6 What is the radius of a black hole called?
- 7 How do you calculate the size of a Schwarzschild black hole?
What is the radius of the event horizon of that black hole?
This boundary is called the event horizon. The radius of the event horizon (proportional to the mass) is very small, only 30 kilometers for a non-spinning black hole with the mass of 10 Suns.
Surrounding the black hole is something called the event horizon, the boundary between the black hole and the rest of the universe where the escape velocity is just equal to the speed of light. The Schwarzschild radius depends only on the mass of the object that creates the black hole.
Is the Schwarzschild radius the radius of a black hole?
Any object whose radius is smaller than its Schwarzschild radius is called a black hole….Black hole classification by Schwarzschild radius.
| Class | Approx. mass | Approx. radius |
|---|---|---|
| Micro black hole | up to MMoon | up to 0.1 mm |
What is the diameter of black hole?
It has a diameter of about 78 billion miles. For perspective, that’s about 40\% the size of our solar system, according to some estimates. And it’s estimated to be about 21 billion times the mass of our sun. So there you have it, black holes can be millions of times larger than suns and planets or as small as a city.
How do you find the radius of an event horizon?
Use the Schwarzschild Radius formula. The more precise name for the event horizon is the Schwarzschild Radius, named after Karl Schwarzschild. The formula for the Schwarzschild Radius is Rs = 2GM/c^2.
What the event horizon of a black hole is?
The event horizon of a black hole is the point of no return. Anything that passes this point will be swallowed by the black hole and forever vanish from our known universe. At the event horizon, the black hole’s gravity is so powerful that no amount of mechanical force can overcome or counteract it.
What is the radius of the event horizon of Sagittarius A?
The black hole system at the centre of our galaxy is known as Sagittarius A* housed within a radio source. It has a mass of around 4–5 million solar masses and a radius of around 2 x 10^7 km, or 20 times that of our own sun.
How big is the radius of a black hole?
Black hole classification by Schwarzschild radius
| Class | Approx. mass | Approx. radius |
|---|---|---|
| Supermassive black hole | 105–1010 MSun | 0.001–400 AU |
| Intermediate-mass black hole | 103 MSun | 103 km ≈ REarth |
| Stellar black hole | 10 MSun | 30 km |
| Micro black hole | up to MMoon | up to 0.1 mm |
What is the diameter of the event horizon?
If Earth were compressed until it became a black hole, it would have a diameter of about 0.69 inches (17.4 millimeters), a little smaller than a dime; if the sun were converted to a black hole, it would be about 3.62 miles (5.84 kilometers) wide, about the size of a village or town.
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).
How big is the event horizon of a black hole?
The size of an event horizon depends on the black hole’s mass. If Earth were compressed until it became a black hole, it would have a diameter of about 0.69 inches (17.4 millimeters), a little smaller than a dime; if the sun were converted to a black hole, it would be about 3.62 miles (5.84 kilometers) wide, about the size of a village or town.
What is the event horizon of a sphere?
Event horizon (Schwarzschild radius) just marks the radius of a sphere past which we can get no information, no particles and no light. The distance computed from the mass of an object is called Schwarszhild radius and the event horizon is a region of space-time.
How do you calculate the size of a Schwarzschild black hole?
In formulas, this radius for a Schwarzschild black hole of mass M in SI units is 2GM/c^2, where G is Netwon’s gravitational constant and c is the speed of light. So there ya go, if you want to calculate the size of a Schwarzschild black hole of some mass, all you need is to plug the numbers in.