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Have you ever wondered how many black holes are in space?  A study that appreciates it

Have you ever wondered how many black holes are in space? A study that appreciates it

The observable universe contains 40 quintillion stellar black holes of mass, or 40 billion billion, the study estimates.

In a story published by the Daily Mail website and translated by the Beirut International Voice, he revealed that stellar-mass black holes are those that form at the end of the life of giant stars and have masses ranging from a few hundred to those related to the sun.

Experts from the International School for Advanced Studies (SISSA) used a new computational approach to estimate how many such holes should have formed.

Furthermore, they said, these black holes represent 1 percent of all normal, or baryonic, matter in the observable universe, which is 93 billion light-years wide.

The team said the findings pave the way for a better understanding of how stellar and intermediate black holes evolve into supermassive black holes.

The calculation was made by theoretical astrophysicist Alex Cecilia of Trieste, which is the Italian headquarters of SISSA, and his colleagues. “The innovative nature of this work is in coupling a detailed model of stellar and binary evolution with advanced recipes for star formation and mineral enrichment in individual galaxies,” Cecilia explained.

By estimating the number of black holes in the observable universe, the team combined models of how pairs of odd and binary stars evolve, and thus the number of those that turn into black holes, with data on other relevant galactic properties.

The latter included information on star formation rates, star masses and the metallicity of the interstellar medium, all of which affect the formation of stellar-mass black holes. It also took into account the role of black hole mergers.

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From here, the team was also able to calculate the mass distribution of these black holes over the entire history of the observable universe. Besides estimating the total number of stellar-mass black holes in the observable universe, researchers have also explored different ways black holes of different masses can form. This included consideration of potential origins in isolated stars, binary star systems, and more densely populated star clusters.

In a related vein, the team found that the largest stellar-mass black holes typically form from collisions of smaller black holes within stellar clusters, an idea that matches well with the gravitational wave data observed on black hole collisions collected so far.

Study author and astrophysicist Lumen Bucco, also from SISSA, said: ‘Our work provides a powerful theory for the generation of seeds of light. [الكتلة النجمية] for supermassive black holes at high redshift. He added that this could serve as a starting point for investigating the origin of “heavy seeds” (medium-mass black holes), which we will pursue in an upcoming study.”

In fact, with this study initially complete, researchers are now looking to make similar calculations that focus instead on intermediate-mass black holes and then, their supermassive counterparts.