• Stambh Organization

GRAVITATIONAL WAVES – NEW SOURCE DETECTED

Salem, 4th July, 2021


Gravitational waves were predicted by Albert Einstein about 100 years ago and they are

dynamical ripples in the fabric of space-time when a collision happens between celestial

bodies, which is similar to the ripples formed when the surface of the water is disturbed. It was

first detected in 2016 by LIGO (Laser Interferometer Gravitational-wave Observatory) when

two black holes merged into one bigger black hole nearly, at the speed of light. Recently,

researchers of UK’s Strathclyde University discovered gravitational waves having their origin

from the collision of a black hole and a neutron star (NS-BH). This particular detection

confirms the presence of populations of binary systems in the universe, wherein two closely

positioned astronomical bodies orbit each other due to their gravitational attraction. They also

help in solving the mysterious formations of black holes and neutron stars that are both

massive compared to the Sun. As these detectors are further made sensitive to light and

vibrations, researchers expect to witness more such collisions in the near future. These

discoveries are expected to provide answers regarding star formation, stellar evolution,

the expansion rate of the universe, and a plethora of supplementary questions pertaining to the

cosmos.


Written by Sasmitha Kumaravadivel

Research Intern, Stambh Organization India




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