[아하! 우주] Every second, a glimpse of the Earth … a supermassive black hole is discovered

[아하! 우주] Every second, a glimpse of the Earth … a supermassive black hole is discovered

Graphic image of a black hole


A rapidly growing black hole has been found swallowing one Earth mass per second. Recently, a team from the Australian National University (ANU) announced that the fastest growing supermassive black hole ever found in the constellation Centaurus.

The age of this black hole is approximately 9 billion years, which is explained by a number that is difficult for the human head to imagine. First, the mass of this black hole is about 3 billion times the mass of our Sun, so it is 500 times larger than the Sagittarius A * black hole in the center of the Milky Way. In particular, it emits radiant light in the process of randomly encircling the surrounding matter, emitting enough energy to be 7,000 times brighter than the light emitted by all the stars in our galaxy. Thus, the ANU research team named this black hole Quasar SMSS J114447.77-430859.


Black hole SMSS J114447.77-430859.3 observed by Australian research team ANU. This is the area of ​​the blue circle.


There is something even more interesting. Other black holes the same size as J1144 stopped growing billions of years ago, but these black holes are still growing, absorbing the matter around them. In response, the research team drew a line that the reason for the rapid rise of J1144 was unclear, but guessed the answer from space history.

“Probably two large galaxies will collide with each other, which would provide a large amount of material for this black hole. In the process, the black hole also grew rapidly,” said researcher Christopher Onken, lead author of the paper. “However, if you look at 7 billion years or half the age of the universe, you will never see a black hole growing at the speed of J1144,” he added.


वास्तविक Real image of Sagittarius A * (Star A), a supermassive black hole in the center of your galaxy. The black part in the center is the black hole and the shadow containing the black hole, and the brightest part of the ring is the gravitational light of the black hole.


Black holes, on the other hand, which also appear to be the subject of science fiction films, are formed at the final stage of the evolution of a very large star and refer to the region of space-time which absorbs everything by its strong gravity. . . In particular, black holes cannot be seen directly because they absorb light. However, experts confirm their existence by the fact that black holes emit powerful currents of matter called jets and absorb most of the matter around them with the help of strong gravity.

The results of this study are published in the latest issue of the “Australian Astronomical Society Publications”.

Written by Park Jong-Ik, Team Reporter pji@seoul.co.kr

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