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At a new Saturn ring auroral

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In the atmosphere of Saturn discovered additional permanent auroral ring, which is four times dimly main and approximately 2-2,5-fold increase it. As astronomers believe, unlike the first, second shines through ions from one of the satellites of Saturn - Entselada. Tom Stellard from the University of British Lester and his colleagues, whose work is published in the latest issue of Nature, noticed traces of the second ring at the pictures in the infrared rays made in 2003. Photos in line very important for the atmospheres of planets mega-ion H3 + range and planetary atmosphere were made based in Hawai ground-based telescopes IRTF (Infra-Red Telescope Facility). The pictures of the second ring is not visible, as it merges with the first being when it is much weaker. However, the analysis shows a clear excess brightness closer to the edges of the first ring. As scientists believe, this is the second ring. Aurora arise in a collision of charged particles, "wound" on magnetic power lines, with atmospheric atoms. His blows particles excite atoms, forcing the electrons to move into high-energy state. Return to normal radiation leads to light which we see as the auroral. On Earth the main source of charged particles is the solar wind, so auroral so well correlated with the level of solar activity. However, at Jupiter, for example, ions are the main supplier of satellites Io and Europa, and auroral clearly visible even brighter "point of ballot" ions, moving the treatment satellites. Well-known before the auroral Saturn also has a solar origin, but the second ring of Lights is also linked with satellites planet, astronomers believe. The leading candidate for the role of supplier of ions remains Enceladus, as has recently been discovered geyser, beating its surface. Nevertheless, it is direct evidence of belonging to this Entselada auroral not.
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