Scientists say there are 40 billion black holes in the universe

By: April Carson



According to a recent research of our universe, there are around 40 billion black holes throughout the observable world.


Black Holes are intriguing, unpredictable cosmic phenomena that may be found all over the world. Unfortunately, we know little about them and have only obtained a blurry photograph of one in another galaxy.


But, what exactly are black holes?


A black hole, in a nutshell, is an astronomical phenomenon with such a powerful gravitational pull that not even light can escape from it. The event horizon is the surface of a black hole, which represents the point where the velocity needed to avoid it exceeds the speed of light. Matter and radiation are therefore trapped and cannot escape as a result.


There are two major categories of black holes that have been investigated extensively throughout the years. Stellar-mass black holes, which may be three to dozens of times the mass of the Sun, are found throughout our galaxy, the Milky Way. Supermassive monsters weighing between 100,000 and billion of solar masses can be discovered in the centers of bigger galaxies, including ours.


Other theories propose that Black Holes are the remnants of previous universes. In contrast, other research says these cosmic monsters might serve as tunnels in space, allowing us to travel great distances with ease. Whether or not the preceding studies are accurate is yet to be determined. A team of scientists from SISSA–Scuola Internazionale Superiore di Studi Avanzati, or International School for Advanced Studies–has estimated how many Black Holes exist in the observable Universe: 40 billion billions.


SISSA doctoral student Alex Sicilia, supervised by Professor Andrea Lapi and Dr. Lumen Boco, with the help of other researchers from the Italian School and various national and international organizations, took on the endeavor to figure out how many black holes exist in the universe.


In the Astrophysical Journal, researchers examined the demographics of stellar-mass black holes, which are black holes with masses between a few and several hundred solar masses that formed at the end of massive stars' lives.


According to the study, surprising data were found: first, astronomers estimate that about 1% of the Universe's total ordinary (baryonic) matter is trapped in stellar-mass black holes. Second, and perhaps more significantly, scientists have discovered that there are at least 40 billion billions of black holes throughout the observable Universe.


Calculating the number of Black holes in the Universe


“This significant result was achieved through an innovative technique that combines the cutting-edge stellar and binary evolution code SEVN developed by SISSA researcher Dr. Mario Spera to empirical prescriptions for important physical quantities in galaxies, including star formation rate, stellar mass, and metallicity of the interstellar medium (which are all vital factors in understanding how fast a star will gather enough material to become a black hole).”


Scientists discover large numbers of black holes in cosmos through novel technique

“It isn't possible to say what the Universe is like today, but if it's anything like what we see in this simulation, then there are far more supermassive black holes out there than we previously thought,” concludes Prof. Richard Bower of Durham University.

The number of black holes in the observable cosmos is not the only thing examined by scientists in this study.


Researchers also examined the various formation channels of black holes of various masses, such as single stars, binary systems, and star clusters, in collaboration with Dr. Ugo Di Carlo and Professor Michela Mapelli from the University of Padua.


Based on their findings, astronomers suggest that the majority of massive stellar black holes are created by chaotic activities in star clusters.


The research has shown that such events are required to explain the mass function of merging black holes as determined from gravitational wave observations by the LIGO/Virgo collaboration.





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About the Blogger:


April Carson is the daughter of Billy Carson. She received her bachelor's degree in Social Sciences from Jacksonville University, where she was also on the Women's Basketball team. She now has a successful clothing company that specializes in organic baby clothes and other items. Take a look at their most popular fall fashions on bossbabymav.com


To read more of April's blogs, check out her website! She publishes new blogs on a daily basis, including the most helpful mommy advice and baby care tips! Follow on IG @bossbabymav


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