An international team of scientists compiled, thanks to the spectroscopic instrument of dark energy located in the National Kitt Peak Observatory (in Arizona, United States), the largest sample made so far made of dwarf galaxies and black holes in the universe.
The researchers cataloged up to 300 new black holes with intermediate mass and 2,500 new active black holes in dwarf galaxies, a double achievement that expands the understanding of science on the population of black holes in the universe and prepares the land for future inquiries on the Formation of the first black holes that formed in the universe and their role in the evolution of the galaxies.
It was achieved by researchers from numerous universities and research centers from several countries, and among them several Spanish scientific institutions (the Astrophysical Institute of the Canary Islands, the Institute of Space Studies of Catalonia or the Institute of Astrophysics of Andalusia), and the results of the work are work They publish this Wednesday at The Astrophysical Journal.
The spectroscopic instrument of dark energy (DESI) is a state -of -the -art instrument that can capture 5,000 galaxies simultaneously, and was built and operated with funds from the Science Office of the Department of Energy of Energy Joined.
900 researchers contributed to the study of black holes
The program, in which 900 researchers from seventy centers around the world participate, is in the five -year room of the sky, a time during which it is expected to observe approximately 40 million galaxies and quasars.
With the first DESI data, researchers were able to obtain an unprecedented data set that included the spectra of 410,000 galaxies, including about 115,000 dwarf galaxies, which are small and diffuse galaxies that contain between thousands and millions of stars and very little gas, a Large set that allows scientists to explore the complex interaction between the evolution of black holes and the evolution of Dwarf Galaxies.
Astrophysics are quite sure that all mass galaxies, such as the Milky Way, house black holes in their centers, “but the panorama becomes confused as we approach the low -dough end of the spectrum,” said the researchers in the Summary facilitated by the magazine.
And they observed that finding black holes is a challenge in itself, but identifying them in dwarf galaxies is even more difficult, due to their small size and the limited capacity of the current instruments to solve the regions close to these objects.
In his search, the team identified some surprising 2,500 dwarf -candidates dwarf of low dough and without discovering.
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“Finding such a large amount of AGN in Dwarf Galaxies can give us a clue on how the first black holes were formed in the early universe,” said Mar Mezcua, researcher at the Institute of Space Sciences (ICE-CSIC) and the Institute of Studies Spaces of Catalonia, co -author of the study and expert black holes of intermediate mass.
The researchers also identified 300 candidates for black -dough black holes, the most extensive collection to date.
Most black holes are light (less than 100 times the mass of the sun) or supermassive (more than one million times the mass of the sun).
The black holes that are between the two ends are little known, but the researchers suspect that they are the relics of the first black holes that were formed in the early universe and the “seeds” of the supermassive black holes found in the center of the great current galaxies.
However, they are still very elusive, since so far they only met between 100 and 150 candidates for intermediate black holes, but with the collection now discovered by DESI, scientists have a new and powerful set of data to use in the Study of these cosmic enigmas.
With EFE information
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