Thursday, January 5, 2012

Origin of Universe Could be Under Water

Soon humanity will have many more "eyes" scanning the universe in search of particles that we can solve the puzzles exist about its origin.

The high-energy cosmic neutrinos can be detected only by a few devices hidden in the most unexpected places: in mountains, underground, underwater, and even within solid ice.

Scientists use them to reveal the mysteries of the universe, to know the nature of dark matter, the evolution of stars and the origin of cosmic rays.
Need more faster than light?

It also could also be used to verify whether these neutrinos are faster than light, as indicated by recent experiments at CERN, the largest physics laboratory in the world, located on the border between France and Switzerland.

Soon two new telescopes will join the network to your search.

The first, a one cubic kilometer detector, replace a small device shaped like an octopus, which until now remained floating a mile deep in Lake Baikal, Russia. The second will be located at the bottom of the Mediterranean Sea.

Taller than the tallest building in the world

KM3NeT, which stands for "cubic kilometer neutrino telescope" will be placed at a depth of three to five miles, and have a volume of five cubic kilometers.

Consist of a vertical device with several strings attached to spherical modules. These glass balls containing sensors to detect neutrinos.

Each string is a mile long, so once the structure is at the bottom of the Mediterranean, will be higher than the highest building in the world, the Dubai, 830 meters.

The thousands of optical sensors, resistant to water pressure, recorded the flashes of light called Cherenkov, a type of electromagnetic radiation emitted by particular charges stemming from the collision of high energy neutrinos with the Earth.

Like all other neutrino telescope, the KM3NeT needs to be in the deepest, darkest places possible so they can detect particles that bombard our planet.

European Project

A total of 40 institutes and university groups a total of ten countries participating in this European project.

At the moment, there are several neutrino detectors, but only three are in search of these elusive particles. This is in NT-200 Baikal, Antares, 2.5 km deep in the Mediterranean Sea and Ice Cube, hidden in the South Pole ice.

To cover the entire planet, neutrino telescopes are located both in the northern hemisphere and the south, pointing in opposite directions.
Ghost particles

Our universe contains many violent processes, including supernova star explosions, collisions of stars and massive cosmic explosions known as gamma-ray outbreaks.

These phenomena accelerate particles to extremely high levels of energy, exceeding those levels achieved in experiments on Earth and causing what is known as high-energy cosmic rays.

Supernova

Scientists believe that high energy neutrinos come from violent processes such as supernova.

Rays propagate through the universe and rain down on Earth's atmosphere.

Although astronomers have recorded cosmic rays for years have not been able to establish what is its origin.

The high-energy neutrinos, scientists believe could help solve the mystery.

These subatomic particles originated from the reaction between cosmic rays and matter, so they believe come from the very heart of that process also generated violent lightning.

But unlike cosmic rays, neutrinos have no electric charge and its mass is nearly zero.

They have so little interaction with normal matter without difficulty traveling through space, traveling long distances, including crossing our bodies and our planet in a straight line.

The fact that they can run at full speed through the universe without any deviation or absorption means they should theoretically be able to pinpoint its origin, making them unsurpassed cosmic messengers.

"Record high energy neutrinos could mean our chance to see this source, and also ensure that high-energy cosmic rays come from the same site, helping us learn more about them and the universe," says Dr Oleg Kalekin, a researchers working on the project at the University in Germany.

But detecting such particles is very complicated.

They are so hard to track that scientists call them "ghost particles".

Apostate to the great

Baikal project


Frustrated by repeated failures to detect when traveling this far, researchers believe they have to bet big.

"It has opened a window of observation of low energy intensity," says Dr. Christian Spiering of DESY, the German research center for particle physics, related to KM3NeT project.

"We want to adapt to higher energies and see how they look these particles are unknown. To do this we need more detectors."

Seniors, explains, means of at least one cubic kilometer. That is why they built the IceCube detector. Began operating at full capacity in 2010 and could be even greater in the future.

Although no one has been able to detect high energy neutrinos, the race to get the first evidence is ongoing, said Bair Shaibonov astrophysicist, Institute of Nuclear Research in Dubna, Russia.

This is why we decided to improve the detector is located in Russia.

The promoters of the plan will immerse the first string of 350 meters long and with coupled spherical modules for the annual expedition to Baikal next year.

The conditions of Baikal, the deepest lake in the world, are ideal for a neutrino telescope, he said.

"We need ice feet wide, a natural platform for upgrades and repairs. There are no storms, and the water is fresh, so the teams do not rust as quickly. To build a large telescope here represents only a fraction of the cost of KM3NeT or IceCube. "

Together, the Baikal-GVD, the KM3NeT and IceCube, will increase the ability of scientists to detect these particles ghost. If successful, their findings shed new light on the nature of the cosmos. By Multiple News

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