Friday, May 13, 2022

Quasi-stars: the hypothesis of the origin of the supermassive black hole

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Quasi-stars: the hypothesis of the origin of the supermassive black hole

In space there exists a cosmic phenomenon known as black hole stars. Unlike normal stars these unique celestial objects derive their energy not from nuclear fusion in their cores but from the material drawn in by a central black hole. Born during the stages of the Universe when matter was densely packed and dominated by hydrogen and helium these special stars have faded away as the Universe continues to expand leaving behind only distant remnants.

Although quasi stars exist mainly as concepts their significance should not be underestimated. They are often confused with quasars which're luminous entities found in the farthest reaches of the Universe and created by supermassive black holes at the centers of galaxies. Quasi stars have their intriguing characteristics. These massive stellar objects are smaller than galaxies but larger than stars sharing some similarities with quasars in terms of mass but lacking galaxy sized dimensions.

It is estimated that a quasi star could reach sizes up to a 10 billion kilometers or approximately 67 astronomical units (AU). To put this into perspective it took the New Horizons spacecraft around a decade to reach Pluto, which is located 40 AU away, from the Sun.The journey towards reaching a quasi star would be more challenging taking an additional five years. Despite their size quasi stars are still smaller than our own Solar System. While the esteemed National Aeronautics and Space Administration (NASA) cannot definitively confirm this they estimate the size of quasi stars based on their distance from the heliopause, which's the outermost boundary of our cosmic neighborhood.

The Unveiled Theory

The formation of a quasi star is believed to start with the collapse of a protostar. The core of this protostar implodes. Gives birth to a black hole. Unlike present day supernovas in their stages the outer layers of the protostar are strong enough to withstand the implosion without being expelled. As a result quasi stars have been proposed as one explanation for how supermassive black holes form at the centers of numerous galaxies. Another hypothesis suggests that supermassive stars with seventeen times the mass of our Sun and an average temperature around 29,700 degrees Celsius could also be responsible, for these phenomena. However it is no longer believed that such colossal stellar bodies exist in our era.

Intriguing and mysterious quasi stars continue to fascinate astronomers and cosmologists 

Despite the uncertainties surrounding their existence humans persist in their pursuit to uncover the secrets of these celestial beings. With scientific efforts and technological progress we strive to bring clarity to the hidden wonders of our ever changing universe.

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