A stellar black hole forms when a massive star exhausts the fuel in its core. The core then collapses. If it has enough mass nothing will be able to stop the collapse and the core will form a black hole. The outer layers of the star will, in most cases, be blaster away in a supernova explosion.
from death of stars
For a stellar black hole, yes. Mass cannot be created or destroyed. Generally a black hole will be less massive than the star from which it formed, as much of the star's mass gets blasted when the star dies in a supernova. A black hole can gain mass over time as matter falls into it.
An intermediate-mass black hole is one that has a mass somewhere between 100 and a million solar masses, i.e., larger than the stellar black holes, but smaller than the supermassive black holes. It seems likely that such holes should exist, but the observational evidence is not yet very firm.An intermediate black hole is one whose mass is somewhere between that of a stellar black hole (a few times the mass of the Sun), and that of a supermassive, or galactic, black hole (millions or billions of times the mass of the Sun).
In the course of normal stellar evolution, at end of its life the Sun wouldn't spontaneously become a black hole simply because it lacks sufficient mass. The minimum mass of a stellar black hole would be about 25 times that of our Sun; effects through which stars lose mass would also need to be considered.
Yes. There is a supermassive black hole at the center of the galaxy and a number of stellar mass black holes through the rest of it.
Perhaps you mean stellar black hole. Stellar means related to a star, so that refers to a black hole that results from the collapse of a star. Actually that's the ONLY confirmed way to create a black hole (other ways are a bit hypothetical), but the term is also used to refer to a black hole which has approximately the mass of a star - to distinguish it from the supermassive galactic black holes in the center of most galaxies, as well as the intermediate-mass black holes found in star clusters.
For a stellar black hole, yes. Mass cannot be created or destroyed. Generally a black hole will be less massive than the star from which it formed, as much of the star's mass gets blasted when the star dies in a supernova. A black hole can gain mass over time as matter falls into it.
In their mass. a "stellar black hole" has a few solar masses (a few times the mass of our Sun), while a supermassive black hole (found in the center of most galaxies) typically has a mass of millions or billions times the mass of our Sun.
An intermediate-mass black hole is one that has a mass somewhere between 100 and a million solar masses, i.e., larger than the stellar black holes, but smaller than the supermassive black holes. It seems likely that such holes should exist, but the observational evidence is not yet very firm.An intermediate black hole is one whose mass is somewhere between that of a stellar black hole (a few times the mass of the Sun), and that of a supermassive, or galactic, black hole (millions or billions of times the mass of the Sun).
Supernovae, including hypernovae, are expected to form stellar black holes. The stars that eventually become supernovae (or hypernovae) don't have the mass requird for an intermediate-mass black hole. It is not yet entirely clear how intermediate-mass black holes or supermassive black holes form; perhaps they start as a stellar-mass black hole and gather more mass, or perhaps a larger object, such as a gas cloud, somehow collapses directly into a gigantic black hole.
A black hole can have anywhere from 2-3 times the mass of the Sun (the lower limit for a stellar black hole), to about 20 billion times the mass of the Sun (the largest known supermassive black holes).
Yes. Intermediate-mass blackhole is a medium size black hole. Scientists have found stellar black holes and supermassive black holes but there is no prove that Intermediate-mass black type of black holes exist. My opinion is that they do exist because when a black hole is becoming a black hole supermassiveblack hole it will need to go though this stage of intermediate-mass black hole.
The closest known stellar-mass black hole seems to be at a distance of a few thousand light-years. Of course, there may be black holes that are closer, but that are not known as such yet.The closest known stellar-mass black hole seems to be at a distance of a few thousand light-years. Of course, there may be black holes that are closer, but that are not known as such yet.The closest known stellar-mass black hole seems to be at a distance of a few thousand light-years. Of course, there may be black holes that are closer, but that are not known as such yet.The closest known stellar-mass black hole seems to be at a distance of a few thousand light-years. Of course, there may be black holes that are closer, but that are not known as such yet.
In the course of normal stellar evolution, at end of its life the Sun wouldn't spontaneously become a black hole simply because it lacks sufficient mass. The minimum mass of a stellar black hole would be about 25 times that of our Sun; effects through which stars lose mass would also need to be considered.
The endpoints of stellar evolution are: White Dwarf Neutron Star Black Hole The endpoint is dependent upon birth mass of the star.
Yes. Our galaxy has a supermassive black hole at its center and likely millions of stellar mass black holes scattered throughout.
Yes. There is a supermassive black hole at the center of the galaxy and a number of stellar mass black holes through the rest of it.
Black holes are generally categorized into three buckets - the largest being called supermassive, the 'medium' being associated with stellar evolution and called 'stellar mass' black holes, and the smallest or tiny ones called "microscopic" black holes.