I would call it better a “Super Nova Ultimata”, or is there any other term you may apply to express unexpressable?
While “Super Nova Ultimata” is a catchy and imaginative term, it is not a commonly used scientific term. To my knowledge, there is no specific term to express the concept you are describing, as there is currently no known process by which a black hole could create a supernova-like explosion.

However, as with many scientific concepts, new discoveries may lead to the development of new terminology to describe them. In the meantime, it is always possible to use creative terminology to explore and express ideas about the universe and its mysteries.
Maybe our galaxies are the result of this unknown behavior of a black holes, which forms new galaxies through explosive pulses over a period of time? Thus, it simply erases the old galaxy from the center and expands it further when it collects enough mass.
While black holes are known to play a central role in the formation and evolution of galaxies, there is currently no evidence to suggest that they form new galaxies through explosive pulses.

Galaxies are formed through a complex interplay of gravitational collapse, gas accretion, and other processes within the universe. Black holes are known to have a significant impact on the evolution of galaxies, as they can control the growth and behavior of stars and gas within the galaxy, and can also influence the way in which galaxies merge and form over time.

However, there is no evidence to suggest that black holes themselves can produce explosive pulses that would result in the formation of new galaxies. While black hole mergers, supernovae, and other astrophysical events can release tremendous amounts of energy, they are not known to be capable of producing the kinds of explosive pulses that could form new galaxies.

Overall, the formation and evolution of galaxies is a complex and ongoing area of research, and we are still learning much about the processes that shape the universe we observe.
as that “big bang” effect. in the center of our milky way. we suppose to have some black hole with enormous mass, all the rest black holes is just a small kids compare to the central galactian one, which has that ability to expand its mass through time.
The idea that our Milky Way galaxy has a supermassive black hole at its center is supported by a great deal of observational evidence, including the motion of stars and gas in the surrounding region.

The black hole at the center of the Milky Way, known as Sagittarius A*, is estimated to have a mass of roughly 4 million times that of the Sun. This makes it one of the largest black holes known in our galaxy and also makes it a key player in the evolution of the Milky Way.

While Sagittarius A* is a massive object, it is not thought to be capable of expanding its mass in the way that the “Big Bang” resulted in the expansion of the entire universe. Rather, the black hole’s influence on the Milky Way is primarily due to its gravitational effects on nearby stars and gas.

The gravitational pull of Sagittarius A* helps to hold together the stars and gas within the Milky Way, and its motion has been shown to play a role in shaping the overall structure and dynamics of the galaxy. It may also play a role in the formation of new stars and the evolution of the galaxy over time.

Overall, while the role of Sagittarius A* in the evolution of the Milky Way is a subject of ongoing research, it is clear that its massive gravitational influence has profound effects on the overall structure and dynamics of our galaxy.
“The gravitational pull of Sagittarius A* helps to hold together the stars and gas within the Milky Way.”. until some moment, but then it booms and expands further.
I apologize as my previous response may have been inadequate. I would like to clarify that there is currently no evidence to suggest that Sagittarius A*, or any other black hole, is capable of spontaneously “booming” and expanding, as you described, beyond its region of influence.

Black holes exert a strong gravitational pull on the matter surrounding them, which can cause gas and other material to accrete onto the black hole’s accretion disk. As this matter falls toward the black hole, it becomes extremely hot and emits high-energy radiation.

However, this accretion process is constrained by the mass and angular momentum of the black hole, and it occurs primarily within the region surrounding the black hole where its gravity is strongest.

While black holes can have a significant impact on the evolution of their surrounding galaxies and can drive the growth of supermassive galaxies over time, they are not known to spontaneously “boom” and expand beyond their regions of influence.

I hope this clarifies any confusion. Please let me know if you have any further questions.
imagine it as some living being trying to gather some food(mass) but in cosmic scale continuum, which is hard to comprehend for a human.