The death of any star greater than about 5 times the mass of our Sun is likely to result in a black hole.
when a star dies
Either a neutron star or a black hole.
A black hole is formed when a star or other large body collapses on itself.
A black hole originated as a star, that is, the star converted to a black hole.
A neutron star or a pulsar, or a black hole.
after a neutron star collapses on itself
A star must be at least 25 times the mass of the sun to form a black hole, though only a fraction of that mass is incorporated into the black hole.
A star must have a mass several times greater than our Sun's to form a black hole. When the star exhausts its nuclear fuel, it collapses under gravity, leading to a supernova explosion, which can leave behind a black hole if the remnant mass is sufficient.
Current estimates suggest that a star must be at least 25 times the mass of the sun to form a black hole. In most cases only a fraction of the star's mass will actually go in to forming the black hole.
A black hole does not create a star. A black hole is formed when a star dies.
No, black holes cannot turn into neutron stars. Neutron stars form from the remnants of supernova explosions of massive stars, while black holes are formed from the gravitational collapse of massive stars. Once a black hole is formed, it will remain a black hole and will not transform into a neutron star.
After the supernova of a red giant, remnants such as a neutron star or a black hole can form, depending on the mass of the original star. If the star was especially massive, it may also result in a supermassive black hole or a hypernova explosion.