An international team of researchers led by the Higher Council for Scientific Research of Madrid, Spain, I discovered supermassive black holes in dwarf galaxies dating from about 10 to 6 billion after the Big Bang.
As revealed by the scientists in a note published in the specialized magazine The letters of the astrophysical journalIt’s about a unprecedented findingsgiven that, to date, only several cases have been discovered in the local universe, that is, the universe today: 13.6 gigayears after the Big Bang.
Massive galaxies and their super-bright black holes are thought to grow in tandem, co-evolve, so thanks to this discovery, the long-running team black holes grew much faster than their respective host galaxiesand that, over the years, they will grow until their mass matches that of the black hole they house.
“Supermassive black holes have masses of more than 1 million solesso what has surprised the team is that their mass is consistent with that of supermassive black holes, since they are between 10 million and 100 million times the mass of the sun”, he explained Mar Mezcua, researcher at the Institute of Space Sciences and the Institute of Space Studies of Catalonia, Spain.
“This finding has indications in our understanding of the growth of supermassive black holes.as is the case of the black hole in the center of the Milky Way”, added the main person in charge of the study.
Precisely, the supermassive hole that was discovered in the center of the Milky Way and baptized Sagittarius A It has a mass equivalent to about 4 million suns, when dwarf galaxies, smaller and less massive, will contain intermediate mass black holesof less than 1 million soles.
In addition, the scientists stated that the origin of these supermassive black holes may be the gaenans with intermediate mass black holes in the univerlaxias so early, that is, about 1 billion years after the Big Bang.
The scientists came to this conclusion after conducting simulations of intermediate-mass, or seed, black holes (from which supermassive black holes are thought to grow) and discover that some of those intermediate-mass black holes most likely have rapidly evolved into supermassivecontrary to what happened with the galaxies that host them.
Finally, the researchers pointed out that, from the new generation of telescopes like the DESI or the LSSTit will be easier for them to detect many more dwarf galaxies that can be found in even more distant galaxies, which, in turn, will allow them to be able study in more depth how was the evolution of black holes from the first seeds to supermassive black holes.
