Mankind has recorded for the first time in the history of Einstein's gravitational waves
LIGO Collaboration analyzed signal over a month
Project participants Advance LIGO managed to capture the signal from the gravitational waves of the acoustic range. This Representatives Collaboration announced at a press conference of the National Science Foundation, which started at 18:30 Moscow time in Washington, writes N + 1.
The article with the results of the study has been accepted for publication in the journal Physical Review Letters, and have appeared on the magazine's website.
"We caught gravitational waves, we made it" - said the representative of aLIGO. The source of the waves scientists called the merger of two black holes. The signal was recorded the first of September, it saw both observatories included in the collaboration aLIGO. Representatives of the collaboration is called signal "very specific". It recorded an increase of the oscillation frequency with time - that predicts the general theory of relativity (GTR) for the merging of massive objects. Signal analysis took about a month.
The energy released as a result of the merger, the equivalent to three solar masses. The merger, according to scientists, occurred 1.3 million years ago to more than a billion kilometers from Earth.
The composition of LIGO consists of two large laser interferometer, located near Livingston (Louisiana) and Hanford (Washington). Interferometers collected on G-scheme, that is composed of two perpendicular arms of equal size located. Their length is four kilometers away. The passage of a gravitational wave through the interferometer is capable of changing the length of one arm relative to the other, which should shift the phase of the radiation in the shoulder and affect the interference pattern. The resulting signal is then is cleaned from noise arising mainly due to mechanical (including seismic) oscillations.