Scientists are approaching the “missing matter” of the universe – lagranepoca

The current cosmological model assumes that the universe is formed by 70 percent dark energy, 25 percent dark and only five percent is “normal” subject matter. (Photo: NASA / Getty Images)

An international team of scientists succeeded for the first time, identify the place from which he started a radio burst of short duration (RRB), which allowed them to confirm the current model cosmological distribution matter in the Universe , according to a study published in Nature.

such bursts, of still unknown origin, are bright flashes radio that usually last about milliseconds and they are very difficult to detect. Since it was discovered in 2007 alone have been located 16 phenomena of this kind.

In addition, the study confirmed that the RRB can be used to find the “ missing matter” or “missing mass” of universe , then using that burst as a tool able to “weigh” the universe, or at least the “normal” matter it contains, the study director, Evan Keane said.

the current model cosmological believes that the Universe is formed by 70 percent dark energy, 25 percent dark and only five percent matter is “normal” matter (which makes up everything we see .)

The current cosmological model assumes that the universe is formed by 70 percent dark energy, 25 percent dark and only five percent is “normal” subject matter.

However, through the observation of stars, galaxies and hydrogen, astronomers have only been able to locate the half the “normal” matter. the rest can not be directly and refer to it as “missing mass”.

the blast localized by scientists originated in an elliptical galaxy located about 6 billion light.

years

in the past, the RRB gusts months or even years later found to occur when reviewing existing data, which was later to follow up the observations, he explained Evan Keane, the international project the Square Kilometre Array, which pretend to build the largest radio telescope in the world.

therefore, the team developed its own system of observation in the University of Technology Swinburne (Australia) to detect those the RRB and give the alarm to other telescopes to follow.

the observation of the RRB also possible to measure the rate at which the galaxy that started moving away from the Earth due to the accelerated expansion the Universe.

Until now, scientists had only to that extent, but now also know the distance from which it came can measure “the density of the material between the point of origin and Earth, to compare with the current model of the distribution of matter in the Universe “.

in the future, it is expected that the Square Kilometre Array locate hundreds of bursts and determine where they occurred. This will allow greater accuracy of measurement of cosmological parameters, including the distribution of matter in the universe and provide a greater understanding of dark energy.

Original article here