Another detection of gravitational waves – Interia

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Confirmation of the existence of gravitational waves will probably be the greatest discovery of this century. Already it is known since February that the scientists had to announce this discovery, but still waiting to confirm the observation. It just did, and after finding two cases read the track of gravitational waves could officially announce the discovery.

the discovery of gravitational waves may be one of the greatest achievements of mankind

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the European Space Agency has successfully tested the technology, which in the future will be used for the construction of a cosmic gravitational wave observatory. This enabled the experiments conducted on board built in cooperation with NASA probe LISA Pathfinder. The probe, launched from Earth on Dec. 3 … read more
                     

In March 2014 the scientific world was electrified by the alleged discovery of evidence for the existence of so-called primitive gravitational waves, which remained after the inflation of the universe. Then it turned out that nothing special was discovered and it was a misunderstanding, and the alleged primary gravitational waves are nothing more than dust present in our own galaxy.

This time we are dealing with the discovery of gravitational waves accompanying the collision of two black holes. So this is not a phenomenon associated with the early period of expansion of the universe, but simply the effects of astrophysical phenomena taking place in the cosmos.

Gravitational waves associated with one of these collisions It was detected in September 2015. It succeeded thanks to laser detectors US LIGO Observatory. One of them was in Washington and the other in Louisiana. Both devices have registered almost simultaneously measure the phenomenon, which may be the result of the passage of gravitational waves coming from the two colliding black holes.

Experts speculated that the detection of a similar phenomenon will be only a matter of time and they were not wrong. The next signal indicating the detection of gravitational waves as a result of such a collision received on Christmas Eve, December 24, 2015 year, but have so far lasted verify the result.

It was agreed that this time collided black holes slightly smaller in terms of weight because the received signal was weaker than the previous one. Results and studies on these breakthroughs published in the journal “Physical Review Letters”.