Can You Hear The Black Hole Ringing?

Scientists have detected the ringing of an infant black hole for the first time. What is most important is the pattern of the ring. It points and supports Einstein's theory of General Relativity.

Lets us refresh our knowledge about General Theory of Relativity. What is General Theory of Relativity? Albert Einstein's General theory of Relativity is one of the most important achievements of the 20th century physics. According to Einstein what we actually perceive as the force of gravity actually arises from the curvature of space and time. Isaac Newton had discovered the reaction of gravity on other bodies but Einstein actually found the origin of the gravity. According to Einstein Space and time both are the same things and can be represented by a plane. Any mass that is placed on this plane will make an indentation or bend to the plane. To understand it better let us take a sheet of cellophane and place a metal ball on it, the metal ball will make the cellophane sheet to bend, that is what gravity is. The bigger and heavier the ball the more will be the bend, the same applies to space and time. Now if we take a smaller metal ball and place it close to the bigger metal ball that is already on the cellophane the smaller ball will automatically move towards the bigger one due to the curvature of the cellophane paper. If we throw the smaller ball in a certain trajectory around the bigger one on the cellophane sheet it will start revolving around the bigger ball. This is what exactly Einstein proposed. He said that objects such as the sun and the Earth change the geometry, and in the presence of matter and energy space and time can evolve, stretch and warp forming ridges and mountains and bodies that cause the bodies passing through it to zigzag or curve. So though it looks like that the Earth is being pulled around the sun by gravity but there is actually no force that is doing it rather it is the geometry of space and time around the sun that is making the Earth move around it.
So by all means if Einstein's theory of general relativity holds true than a black hole born from collisions of two giant black holes would produce gravitational waves similar to the sound waves of a bell that has been struck, thus the "ringing" sound.
Physicists from MIT and others have heard the ringing of the infant black hole for the first time and that this ringing does predict the black hole’s mass and spin. More reasons to support Einstein’s theory.

By: Madhuchanda Saxena
Content: https://www.sciencedaily.com/releases/2019/09/190911121948.htm