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Current Affairs

Gravitational wave detected from new- born black hole

Date: 14 September 2019 Tags: Space

Issue

Researchers have, for the first time, detected the gravitational waves from a newly born black hole, and found that the ringing pattern of the waves predicts the cosmic body’s mass and spin, providing more evidence for Einstein’s General Theory of Relativity.

 

Einstein’s Theory of Relativity

Einstein’s General Theory of Relativity predicted that a black hole of a given mass and spin can only produce tones of a certain pitch and decay.

 

Gravitational waves

  • Gravitational waves are disturbances in the curvature of spacetime, generated by accelerated masses, that propagate as waves outward from their source at the speed of light.

  •  Gravitational waves transport energy as gravitational radiation, a form of radiant energy similar to electromagnetic radiation.

 

Details

  • Researchers from the Massachusetts Institute of Technology (MIT) in the U.S., calculated the mass and spin that the black hole should have using physicist Albert Einstein’s General Theory of Relativity, given its ringing pattern.

  • These calculations, according to the study, matched earlier measurements of the black hole’s mass and spin.

  • The study has showcases possibility that black holes exhibit only three observable properties, mass, spin, and electric charge.

  • Scientists had earlier detected the gravitational waves when two black holes merged, which managed to produce a distinct signal pattern.