composite image in visible light and ultraviolet (northern lights)
NASA, ESA, and J. Nichols (University of Leicester)
The space telescope “Hubble” photographed animation aurora raging above the northern pole of Jupiter. Survey was conducted observatory in the far ultraviolet range. Video and photos are published on the official website of the telescope.
Two published taymlapsa (video with slow motion) were obtained on May 19 and June 2, 2016. Size of the area over which the light auroras almost three times the diameter of Earth, and their energy is hundreds of times greater than Earth.
The main source of auroras on Jupiter are charged solar wind particles. Once in the atmosphere of the gas giant, they collide with molecules of gases (mainly hydrogen) and transmit energy to them. Excited molecules re-emit it in the form of light quanta.
In addition to this traditional source of the aurora of Jupiter’s volcanic activity caused one of the largest of its moons – Io, as well as the emission of ionized particles other satellites. In the early pictures the glow of this nature was manifested in the form of bright spots with trains.
The observations of the aurora will go after the arrival to the gas giant “Juno.” While the probe will study the solar wind and the magnetosphere of the planet’s condition, “Hubble” is several times a month to make measurements of auroral activity. Taken together, these data will allow a better understanding of how different sources of influence on this phenomenon.
Auroras have been observed in many bodies of the solar system: Venus, Mars, Saturn and other gas giants. In a collision of planets with powerful coronal mass ejections, auroras can occur even in the X-ray range. In addition, recently, astronomers have observed auroras and outside of our system – on the surface of the brown dwarf in the constellation Lyra
Vladimir Korolev
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