Astrophysicists detect a black hole swallowing a neutron star
- A recent new study has proved that ‘black holes’ are not shrinking with time. This study has proved the black hole area theorem propounded by physicist Stephen Hawking. In this theorem it was proved that it is impossible for the surface area of a black hole to decrease with time.
- The black hole field theorem was derived from Einstein’s theory of general relativity in the year This theory defines gravitational waves and black holes.
- Einstein’s 1915 theory of general relativity holds that the force of gravity arises from the curvature of space and time.
- The black hole field theorem extended the theory of special relativity, which argued that space and time were inextricably linked, but this theory did not accept the existence of gravity.
- A black hole is a place in space where the pull due to gravity is so great that even light cannot escape. Here gravity is so dominant because matter gets compressed into a smaller space. This can happen during the phase of a star’s extinction.
Types of Black Holes:
- Stellar
It is formed due to the gravitational contraction of a star. Its mass ranges from 5 times to several times the mass of the Sun.
- Intermediate Mass
Their mass ranges from 102-105 times the mass of the Sun. Their mass is clearly greater than that of stellar black holes but less than that of supermassive black holes.
- Supermassive
These are the largest black holes. They themselves contain masses of hundreds, thousands, even billions of times the mass of the Sun.
- Miniature
- 148 femtometer-sized black holes for which quantum mechanical forces play an important role. The concept of the presence of a black hole smaller than a stellar black hole was proposed by the famous astrophysicist Stephen Hawking.
- The most common way for a black hole to form is through stellar death. Stellar black holes are created when the center of a very massive star collapses or collapses on its own. When this happens, it causes a supernova.
Source – The Hindu
