This 'Ultramassive' Black Hole Shouldn't Exist, Scientists Tell Us Why
Surrounded by lights but also by many mysteries, supermassive black holes are among the greatest enigmas in the world of astrophysics. So much so that some, of an “ultra massive” size should theoretically not exist. Explanations.
If black holes are among the heaviest cosmic objects in space, they are also the most enigmatic. So just imagine supermassive black holes . Thanks to the Event Horizon Telescope, we already know a little more about them, in particular thanks to a photograph of M87, a supermassive black hole located in the eponymous elliptical galaxy.
Billions of solar masses
These objects are so heavy that their weight is counted in millions of solar masses. Knowing that it has the modest weight of 332,946.048 7 times the mass of the Earth , we let you imagine the dizzying mass of this kind of cosmic monster.
Always further in excess, some supermassive black holes stand out with their EVEN more incredible mass. The galaxy J2157, for example, contains a black hole with a mass of 12.3 billion solar masses.
Cosmic monsters...
Scientists from the Australian National University have estimated that it could devour the equivalent of one sun per day. Fortunately, this one is 700 million light-years from our Milky Way . We are saved !
But it is not finished ! Another galaxy named S5 0014+81 and located in the constellation of Cepheus, holds an even more monstrous black hole. This one would weigh… 40 billion solar masses . Just that.
…Which should not exist
Appeared only 1.6 billion years after the Big Bang, the study of the latter suggests that these black holes would have appeared very quickly in the history of the Universe . If these cosmic objects intrigue astronomers so much, it is because their titanic size still remains a mystery.
Indeed, even supposing that these black holes had only grown since their birth, as they absorbed, it is impossible that they could have ingested enough matter to grow so big. Moreover, the universe was not extended so that the latter take up as much space in the universe as it was.
?Ultramassive black holes
Some researchers even speak of "ultramassive" black holes . Yueying Ni, astrophysicist from the Harvard-Smithsonian Center for Astrophysics testifies: "What we found are three ultramassive black holes."
She continues: "The latter assembled their mass during cosmic noon, the time, 11 billion years ago, when star formation, active galactic nuclei (NGAs) and supermassive black holes in general reach their peak. peak of activity" . We imagine the picture of this joyful cosmic far-west.
Source : websites