Scientists have observed in Europe over the sun weak red arc

06.04.2013

New natural phenomenon observed in kontinenta.Yarko red arc, invisible to the naked eye, have been found in the skies over many countries in Europe using modern cameras, writes science.nbcnews.




When the flow of high-energy charged particles that come to Earth after a solar flare, they cause the so-called geomagnetic storms. These events are disturbances in the magnetosphere of the Earth's atmosphere, which is dominated by the magnetic field of the planet. The most dramatic effect of these giant storms — bright auroras in the respective regions of the Earth. But the result of the storm is expressed in other striking consequences, for example, slightly glowing red arc high into the ionosphere. This electrically charged part of the Earth's atmosphere, extending from 50 to 370 miles (85 to 600 km) above the Earth.

Arc emit very specific wavelengths of red light, but they are too weak to be seen by the naked eye. They appear in the lower latitudes, in contrast to the auroras, which are usually observed at higher latitudes.

At first, scientists thought that too much light pollution in Europe obscures dull red arc. But now, the new Observatory (ASIAGO), located in northern Italy, the camera uses a high-sensitivity sensor and a lens "Fish eye" to watch those red arcs and weakly polar lights on most of the continent.

An international team of scientists observed the sky from the observatory during geomagnetic storms that hit Earth in 2011. After comparing their observations with satellite and ground-based observations, the researchers found that the red arc reaches of Europe, stretching from Ireland in the west to the east of Belarus.

The fact that researchers are now able to see these arcs in Europe means that by combining similar data from the United States and the Pacific, scientists are now able to see how far the arc stretching across the vast distances of the planet. And 'so how long does the process of the magnetosphere to "merge their stormy energy," — said researcher Michael Mendillo, a space physicist at Boston University. (Red arc occur when the oxygen atoms in the ionosphere emit light when excited as electrons heated at high altitudes in the magneto-earth).

These data, in turn, help scientists analyze the impact of space activities on the radio in real time and are used in projects dealing with space weather models, the researcher added.

Scientists have set out their findings online Feb. 25 in the journal Space Weather.

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