January 28, 2023


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We know the number of black holes in the universe

We know the number of black holes in the universe

Since we can’t “see” black holes, they are hard to detect. Likewise, estimate how many such things are in the known universe. Scientists from the Scuola Internazionale Superiore di Studi Avanzati (SISSA) gave the number: 40 quintillion, or 40,000,000,000,000,000,000,000,000 black hole. It’s almost 1 percent of all ordinary matter of the visible universe.

The innovative nature of this work is based on coupling a detailed model of stellar evolution and binary systems with advanced recipes for star formation and mineral enrichment in individual galaxies. This is one of the first and most powerful preliminary calculations of a stellar black hole’s mass function in the entire history of space, said Alex Cecilia of SISSA.

Italian scientists have concluded that knowing the history of massive stars in the universe, it will be possible to predict how many of them ended their lives as black holes. This knowledge can provide important clues about The growth and evolution of supermassive black holes millions or billions of times the mass of the sun.

Alex Sicilii’s team only looked at black holes that formed through the evolution of single or double stars. This allowed them to calculate the birth rate of stellar-mass black holes, From 5 to 160 times the mass of the Sun.

The study indicates that in the known universe There must be about 40 quintillion stellar-mass black holes. They are scattered throughout the visible space, have no clusters and no places where they are not. The new research agrees with figures suggested some time ago from gravitational wave studies.

Lumen Boco of SISSA added: “Our work provides a solid theory about the generation of light seeds for supermassive black holes at high redshift and could be the starting point for heavy seed origin research that we will continue in future work.”

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