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Types of black hole

What is a black hole ?

A black hole in space is a region where the gravitational force is so strong that even light can not escape it.  Any matter which comes under the influence of a  black hole will be crushed down to a confined space and is being eaten by the black hole.

 Black holes are formed when a star dies. Not every star can become a black hole only which have mass 1.4 times the mass of our sun. ( approx   2.8E30). A few black holes are orbited by the other heavenly bodies and are slowly eaten away by the black holes.

 As the matter falls towards the event horizon it gets heated due to the increasing gravitational pull and the friction and forms a bright circular disc around the black hole known as Assertion disc.  

On the basis of mass and sizes black holes has been divided into four categories:-

1.) Stellar black holes 
When a star with a mass range from five to several tens times of the solar masses collapses due to its own gravitational force the stellar black hole is formed. 

types of black hole
Illustration of a stellar black hole

This is the most abundant type of black hole in the galaxy. Several dozens of stellar black hole may exist within the Milky Way galaxy.

  
2.) Intermediate black holes 
An intermediate black hole is a class of black holes in which mass varies from  10^2 to 10^5 times the mass of our sun.

types of black hole
Illustration of an intermediate black hole

Several intermediate black hole candidates have been discovered in our galaxy and other galaxies.

3.) Supermassive  black holes 
These are the largest type of black holes ever found. They are mainly found at the centre of the massive galaxies. These black holes varies from several hundred thousand to a billion times the mass of the sun.

types of black hole
Real image of the supermassive black hole at the centre of Messier 87 galaxy

In 2019 astronomers were finally able to process the first-ever picture of a supermassive black hole at the centre of Messier 87 galaxy.  


4.) Miniature black holes
 Also known as Micro black holes are the hypothetical tiny black hole for which quantum mechanical effects plays an important role. This hypothesis was suggested by Stephen Hawking back in 1971. Further studies suggest that a micro black hole could be at energies at low as the Tev range, which is available in a particle such as large hadron collider

Illustration o miniature black hole


  
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Comments

  1. UnknownMay 19, 2020 at 6:50 PM


    plenty of knowledge confined in small stanzas
    like black hole

    love the way of writing and explaining things.

    ReplyDelete

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