This week, the world may know about the major scientific discoveries of the year, or even several years
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After the September LIGO (Laser Interferometer gravitational-wave Observatory) upgraded observatory detectors were launched in the scientific world began to spread rumors about the detection of gravitational waves. It was reported that in the United States laboratory detectors could passage fix one or more of gravitational waves. This writing in his microblog on Twitter renowned cosmologist from Arizona State University, Lawrence Krauss. True, the LIGO press office did not confirm if it posts .
On Friday Krauss said that on February 11, in Washington scheduled special a press conference, which will be announced the detection of gravitational waves. “A new era in astronomy ?!” – with these words the scientist completed this Tweet
Tweet Krauss was the confirmation of the information, which at that time owned science department “Gazety.Ru”: the source said that during the week from 8 to. February 14 will be held the official announcement about the opening of gravitational waves. Probably the corresponding scientific paper will be presented in the journal Nature. It became known from a letter that a theoretical physicist Clifford Burdzhess Canadian colleagues sent a number of e-mail. This letter was published on the official website of the journal Science on Friday Moscow time. Burdzhess himself said he did not see the publication, but he knows about it with colleagues, the words that are familiar with the article. At the time of delivery of the journal Nature the material has not responded to the request “Gazety.Ru” on the subject, any article with the results of LIGO whether published February 11
Scientists kept secret until the last
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science Department “Gazety.Ru” asked the press service of the LIGO comment on the information about the opening. Officials collaboration said that value interest shown by the media to the project, but are asked to respect the scientific process and will not comment until the official publication of results in scientific journals.
When this in LIGO not announced any measures for the media.
collaboration representatives assured that they will warn in advance of the place and time of the press conference.
in addition, the science department directly addressed by 15 scientists from the LIGO collaboration. All of them refused to give kakie-libo comments to the media, is not to be made an official announcement about the opening.
However, some of the responses the scientists indicated that there are interesting results obtained in the course of the last run of LIGO detectors, and that these results will be presented very soon
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Professor Lawrence Krauss, told “Gazety.Ru” confirmed that, according to him, the press conference, which will be announced on the opening will take place this week, but it has no information on the exact location and time of its implementation. “This is a very exciting event, and we should expect interesting results,” – said Professor
Science Department “Gazety.Ru” and also spoke to Clifford Burdzhessom letter which published the journal Science
<.. p> «I must admit that had not previously heard about the message Lawrence Krauss, – said professor Burdzhess. – I am not affiliated with LIGO corporate obligations, so I can safely say the opening theme. Beginning in the fall, I heard that the LIGO detectors managed to capture signals. Recently, I learned more details that seem quite plausible. I have heard from colleagues that the discovery really happened and may be announced Feb. 11 ».
What could fix the LIGO detectors?
The detectors installed in the LIGO, can detect gravitational waves with frequencies more than 10 Hz. So, if the signal is actually caught, it corresponds to the final stage of the collision of black holes when holes are rotating at a speed of more than 10 revolutions per second.
According to modern ideas, while rotating around a common center of mass of a system of two black holes lose energy through the emission of gravitational waves. The final stage of the collision occur and unbalanced gravitational collapse. This process lasts for a split second, and during that time in the gravitational radiation – ripples of space-time – out the energy component, by some estimates, more than 50% by weight of the system
In a letter to Clifford Burdzhessa stating. that collaboration LIGO recorded gravitational radiation caused by the merger of binary black holes with masses of 36 and 29 solar masses into an object the mass of 62 solar masses.
What will mean the opening of gravitational waves?
Search for gravitational waves – this is one of the biggest problems of modern physics. According to the general theory of relativity (GTR) Albert Einstein, any matter, moving with acceleration, it creates a space-time disturbance – a gravitational wave. This disturbance is greater, the higher the acceleration and the mass of the object. In view of the weakness of the gravitational force compared to other fundamental interactions of these waves should have a very small amount, it is difficult to register
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of all the gravitational telescopes operating in the world, the greatest sensitivity has located in the United States laser interferometer gravitational wave observatory LIGO
This. observatory consists of two L-shaped systems formed by two arms 4 km each.
A gravitational wave has the property to change the metric, ie, once on the device, it will change the arm length of each of the systems, and laser interferometer will record the change.
If the opening does take place, it will be an important confirmation of Einstein’s theory and the main event in the field of physics applying for the Nobel Prize.
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