Sunday, January 12, 2014

U.S. astrophysicists develop a three-dimensional map of ... - Ecodiario

Europa Press | 12/01/2014 – 3:17 Update: 09:58 – 01/12/14
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mapatridimen.jpg

Part of the three-dimensional map / Source: Archive

A team of U.S. astrophysicists have developed a highly accurate three-dimensional map of the universe, which could provide further insights into dark matter.

The BOSS project (‘Baryon Oscillation Spectroscopic Survey’) has drawn the most accurate 3D map of the universe to date, the error in determining the distance is only about one percent.

The development of three-dimensional map, included data from observations of the spectra of galaxies and 160,000 quasars 1,277,503 galaxies obtained by the telescope installed at the Apache Point Observatory in New Mexico.

Scientific work was presented at the website of Cornell University (USA), and the same is accessible to the public. In its realization was used 90 percent of the planned research found in an area of ??8,500 square degrees of sky objects. The map includes objects that are at a distance of 6,000 million light years from Earth.

DESIGN FEATURES The creation of this three-dimensional map was made possible by the method of determining the distance to those based on the phenomenon of baryon oscillations, representing traces of acoustic waves propagating through the early universe objects until it became clear.

Sound waves that stayed in the space after the reduction temperature below a critical level, have created inhomogeneities which, in turn, formed clusters of galaxies.

According to scientists, creating a three-dimensional map of such precision is of great importance for the study of the nature of dark energy, which accounts for almost three quarters of the total energy of the universe.

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