Black holes have been seen as the villain in the universe story. The dark mass which is present in every galaxy does not allow light to pass through it. Milky Way galaxy has a super black hole hides at its center that makes its study, physicist named Stephen Hawking.
The most popular theorem of Hawkins has been proved by watching when 2 black holes merged, ripples made in space-time. This theorem is first put forward in 1971, which says a black hole can’t shrink in size after time. It is obtained from Albert Einstein’s relativity theory which describes the black holes and gravitational waves.
The area theorem of a black hole has strongly attracted the physicist over the world because it works on the same thermodynamic principle that the entropy cannot reduce over time. And, it continually increases. Further, the new observations become solid Einstein relativity’s theory.
Measuring black holes
Astrophysicist Maximiliano Isi, who is a scientist at the Massachusetts Institute of technology lead this information, and researchers used the data which is released when the 2 small black holes combine into 1. The gravitational wave data is divided and observed through the latest LIGO (Laser Interferometer Gravitational-Wave Observatory) in 2-time segments, after and before the merger. The researcher used the measurement of before-after to calculate the black hole surface area in every segment.
According to the calculations, the combined black hole surface area was greater rather than the sum of 2 small black holes. The examination upholds the area law which says that the black hole size does not reduce over time.
The surface area of a black hole cannot be decreased, that is the same as the 2nd law of thermodynamics. It has mass conservation because you cannot minimize its mass. And, it is analogous to the energy conservation, lead Maximiliano notifies Live Science.
The black hole was found from the death of a star with a big gravitational field. The matter gets compressed in small space under it and trapping the dead starlight. The 1st black hole merger was observed in 2017 using the LIGO detector. It records the gravitational signal through the combination of 2 small black holes that begin almost a billion light-years from the Earth.
The 2 black holes were 7 and 12 times the sun’s mass and upon coupling become 18 times the sun’s mass.
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