The birth of Black Holes
Albert Einstein first predicted black holes in 1916 with his general theory of relativity.
There are three types: stellar black holes, supermassive black holes and intermediate black hole.
Stellar black hole
A stellar black hole is a black hole formed by the gravitational collapse of a massive star.They have masses ranging from about 5 to several tens of solar masses.
There are three types: stellar black holes, supermassive black holes and intermediate black hole.
Stellar black hole
A stellar black hole is a black hole formed by the gravitational collapse of a massive star.They have masses ranging from about 5 to several tens of solar masses.
By the no-hair theorem, a black hole can only have three fundamental properties: mass, electric charge and angular momentum . It is believed that black holes formed in nature all have spin, but no definite observation of the spin has been recorded.
Our Milky Way galaxy contains several stellar-mass Black Hole Candidates (BHCs) which are closer to us than the supermassive black hole in the Galactic center.
Supermassive black hole
A supermassive black hole is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses , and is found in the centre of almost all currently known massive galaxies.
Supermassive black hole
A supermassive black hole is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses , and is found in the centre of almost all currently known massive galaxies.
At the core of each large galaxy lies a supermassive black hole with the mass of 1 million suns.
The origin of supermassive black holes remains an open field of research. Astrophysicists agree that once a black hole is in place in the center of a galaxy, it can grow by accretion of matter and by merging with other black holes. There are, however, several hypotheses for the formation mechanisms and initial masses of the progenitors, or "seeds", of supermassive black hole.
Intermidiate black hole
An Intermidiate black hole (IMBH) is a hypothetical class of black hole with mass in the range 100 to one million solar masses significantly more than stellar black holes but less than supermasive black hole.
Intermediate-mass black holes are too massive to be formed by the collapse of a single star, which is how stellar black holes are thought to form. Their environments lack the extreme conditions i.e, high density and velocities observed at the centers of galaxies which seemingly lead to the formation of supermasive black holes.
Refrences
wikipedia
space.com
princeton university press
Intermediate-mass black holes are too massive to be formed by the collapse of a single star, which is how stellar black holes are thought to form. Their environments lack the extreme conditions i.e, high density and velocities observed at the centers of galaxies which seemingly lead to the formation of supermasive black holes.
wikipedia
space.com
princeton university press
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