Classifying Z-229-15 is complicated.
Second, it's an active galactic nucleus , or rather, it contains an AGN. An AGN is a region at the center of a galaxy that is exceptionally bright due to aat its core. It's not the black hole itself that's so luminous, but rather all the material from the galaxy that has been trapped in a spinning disk around it, having been drawn toward the black hole by its intense gravitational pull.
That disk heats up and emits massive amounts of energy across the electromagnetic spectrum, resulting in the brightness., which is a specific subtype of AGN. The criteria for an AGN to be classified as a quasar include extreme brightness and a great distance away from Earth — on a cosmic scale, of course. As you can see from the Hubble image, Z 229-15 is indeed very bright in the center.
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