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A tight hug between the pulsars proved (again) that Einstein was right

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Michael Kramer / MPIfR

An artistic impression of a binary system in which two active pulsars orbit each other in just 147 minutes.

Observations of two pulsars orbiting each other confirmed two principles of Albert Einstein’s general theory of relativity.

Vgeneral theory of relativity understanding physical Albert Einstein about how gravity affects the structure of space-time. In particular, the “curvature of space-time” is directly related to the energy and momentum of any substance and radiation present.

16 years before watch a couple of pulsars – very compact neutron stars emitting beams of radio waves from their poles – a group of researchers observed relativistic effects that were previously predicted only by theory.

Einstein’s general theory of relativity predicts that in very massive stellar bodies such as neutron stars, the light will bend around them sharply how photons follow the curved path of spacetime, describes the journal New scientist

When neutron stars are accelerated, which can happen if two stars orbit each other, they emit gravitational waves. These waves will cause their orbits to collapse as they lose energy.

Research team now honored these theoretical predictions in a pair of pulsars known as PSR J0737-3039A / B. These pulsars orbit each other in just 147 minutes at speeds up to 1 million kilometers per hour.

Every time each pulsar rotates, the researchers received a burst of radio waves on Earth.

Scientists have found that radio pulses arrived later than expected… This was because they were deflected by an angle of 0.04 degrees. due to the strong curvature of space-time around two stars.

This is the first experimental evidence of such a high curvature, according to the team of Robert Ferdman of the University of East Anglia, UK.

Also these pulsars has undergone an orbital decay due to the radiation of gravitational waves.

“This is the strictest test of Einstein’s theory to date, and sets the standard that future experiments must meet in terms of accuracy in order to test general relativity with any meaning,” says Ferdman. New scientist

The results of the study were published by recently in a scientific journal Physical view X

Daniel Costa, ZAP //

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