0
Stellar-mass black holes can form at the end of life of a star when the star's fuel is exhausted. Once the outward pressure from heat is no longer present, the star's matter collapses under the effects of its own gravity; if other outward pressures (degeneracy pressures) are inadequate to prevent the collapse, such as in a more massive star several times heavier than our own Sun, it will continue to collapse downwards and become a black hole.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoIt is uncertain how supermassive black holes form. Some scientists suggest they form from the simple collapse of clouds of gas too massive to form stars. They might also originate as large stellar mass black holes that form the the deaths of massive stars and the merge into a single black hole. All supermassive black holes grow by consuming more matter.
Wiki User
∙ 8y agoA stellar-mass black hole forms at the end of life of a massive star when the fuel is exhausted and the outward pressure can no longer balance the inward pull of gravity (the hydrostatic equilibrium). As the matter from the star cools and shrinks, the density of the matter increases until at a certain point, the escape velocity exceeds the speed of light and a black hole is formed. It is calculated the minimum amount of mass in current theories of stellar evolution to naturally form a black hole would be several times the mass of our own Sun; anything less than that would likely form a white dwarf or neutron star.
Wiki User
∙ 7y agoThat is not known for sure. It seems somewhat surprising that black holes become so large, in a relatively short time.
One possibility is that a regular black hole just swallowed gas and dust, close to the limit of its capacity to do so (the Eddington limit).
Another possibility is that lots of regular-sized black holes and perhaps neutron stars gathered at the center of a galaxy, and fused together into a single large black hole.
Of course, it can well be a combination of these two effects.
Wiki User
∙ 14y agoFrom Supermassive stars.
It is quite probable that supermassive black holes formed from the earliest population III stars.
Add your answer:
Earn +20 pts
What force causes extremely high mass stars to turn into black holes instead of nuetron stars?
Black holes are formed by super massive stars when they collapse. Less massive stars will form neutron stars. Therefore, the original size and mass of the star will determine if a black hole will be created when the star collapses.
What will most massive stars form?
The most massive stars will form ultra large stars, which will collapse into black holes upon their demise.
Will the sun end its life as a black hole?
No. Only the most massive stars form black holes. When the sun dies it will form a white dwarf.
What is more common in our galaxy white dwarfs or stellar mass black holes?
There are more white dwarfs. Only the most massive stars can form black holes. White dwarfs form from low to medium mass stars, which far outnumber the supermassive ones.
Why can only very large stars form black holes?
because it takes a very large and massive core to pull on itself enough to shrink.
Did galaxies form around super massive black holes?
It's generally believed that galaxies first formed around "ordinary" black holes and over time, they grew into super massive black holes as stars were slowly "consumed" by the black hole.
Where are neutron stars located at in the universe?
Mostly in galaxies, where they can form Super Massive Black Holes.
When do black holes appear mostly?
Most black holes are believed to form when very massive stars die.
Do stars ever into black holes?
Yes. When the most massive stars die, their cores collapse to form black holes.
Black holes that form during massive supernovae?
Please clarify what your question is.
Do black holes just happen?
No. Most black holes form when an extremely massive star dies and the core collapses, becoming a black hole.
What force causes extremely high mass stars to turn into black holes instead of nuetron stars?
Black holes are formed by super massive stars when they collapse. Less massive stars will form neutron stars. Therefore, the original size and mass of the star will determine if a black hole will be created when the star collapses.
Where did a black hole come from?
Most black holes form when massive stars exhaust their fuel and their cores collapse. There are also supermassive black holes at the centers of most galaxies. Scientists are not sure how supermassive black holes form.
What will most massive stars form?
The most massive stars will form ultra large stars, which will collapse into black holes upon their demise.
Do stars ever turn into black?
Yes. When the most massive stars die, their cores collapse to form black holes.
Will the sun end its life as a black hole?
No. Only the most massive stars form black holes. When the sun dies it will form a white dwarf.
How does a black holes acquire greatest mass?
Most black holes are stellar mass black holes with masses comparable to those of large stars as they form from the collapse of massive stars. Scientists know of the existence of supermassive black holes that are millions to billions of times the mass of our sun and can be found in the centers of most galaxies. Scientists still do not know how these black holes become so massive.
