yes, it sure is. (if the core is massive enough.) if not, it becomes a Neutron Star.
A red giant, otherwise the star that is dieing will just shrink into a white dwarf and eventually disappear.
It depends on the mass of the star. When massive stars die the result is usually an enormous explosion called a supernova, but the core will collapse to form a dense remnant. If the remnant is less than 3 times the mass of the sun then it will form a neutron star. If it is greater than 3 times the mass of the sun it will form a black hole. Extremely massive stars may collapse directly into a black hole with no supernova.
after a supernova
No. A black hole will remain a black hole. A neutron star is a remnant of a star not massive enough to become a black hole.
No. A black hole may be the remnant of the core of what was once a blue star, but the black hole itself is as black as anything can possibly be.
The supernova remnant will either be a neutron star or a black hole.
The amount of mass in the remnant. If the mass of the remnant exceeds 3 solar masses then it will become a black hole.
Depending on the mass of the original star, it is either a black hole or a neutron star.
A red giant, otherwise the star that is dieing will just shrink into a white dwarf and eventually disappear.
It depends on the mass of the star. When massive stars die the result is usually an enormous explosion called a supernova, but the core will collapse to form a dense remnant. If the remnant is less than 3 times the mass of the sun then it will form a neutron star. If it is greater than 3 times the mass of the sun it will form a black hole. Extremely massive stars may collapse directly into a black hole with no supernova.
No.
Black holes came from old big stars that went supernova as it dies. Supernova causes the star to collapse into a black hole
after a supernova
No. A black hole will remain a black hole. A neutron star is a remnant of a star not massive enough to become a black hole.
No. A pulsar is a remnant left behind by a supernova.
No. A black hole may be the remnant of the core of what was once a blue star, but the black hole itself is as black as anything can possibly be.
A neutron star, or a black hole. Which it is, depends on the mass that remains after the supernova explosion. Above a certain mass limit, a black hole will form.