It depends, Black holes can go from being microscopic to supermassive black holes that entire galaxies revolve around. It all depends on which black hole and which quasar.
The quasar is bigger. A quasar is a disk of superheated matter that surrounds a supermassive black hole. The mass of the black hole may be greater than that of the disk, but it is compacted into a smaller space.
Yes. A quasar is a disk of superheated material that sour rounds a supermassive black hole.
A quasar is a galaxy that is radiating massive amount of radioactive energy. A quasar MAY have a black hole at it's center. A black hole is just dead star that collapsed in on itself.
A quasar is believed to have a supermassive black hole at its center. The radiation is emitted outside the black hole's event horizon - from matter that is falling into the black hole.
A Supermassive black hole .
Yes. In simplistic terms, a quasar is the result of a supermassive black hole. The gravitational attraction of the supermassive black hole on the galaxy, causes the effect of the quasar. See related questions for more information.
Yes. Hypergiant stars are very large but also have very low densities. The radiation pressure from a quasar is enough to destroy such a star.
A big black hole.
No. A Quasar is a Black hole in center of some Galaxies. I think our Galaxy has one of them.
For one, a black hole can hardly be observed directly (the Hawking radiation is expected to exist, but it would be way too weak). A quasar (related to material falling into the black hole) is one way the black hole can be observed.Also, the quasar can play quite an active role in the formation of a galaxy.
Yes, a quasar is a galaxy with a super-massive black hole in its center. The hole being invisible, all light vanishing from the great gravity. The quasar itself, among the brightest, most luminous objects in the universe, is being powered by an accretion disc around the black hole.
No, a supermassive black hole is what makes a quasar.