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Magnetic coil springs accelerate particles on the Sun 5nvklj





Magnetic coil springs accelerate particles on the Sun 9tpt39

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Magnetic coil springs accelerate particles on the Sun

Dragon
Dragon
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Magnetic coil springs accelerate particles on the Sun Empty Magnetic coil springs accelerate particles on the Sun

Post by Dragon Fri Jan 19, 2018 5:15 pm

In April and July 2014, the Sun emitted three jets of energetic particles into space, that were quite exceptional: the particle flows contained such high amounts of iron and helium-3, a rare variety of helium, as have been observed only few times before. Since these extraordinary events occurred on the backside of our star, they were not discovered immediately. A group of researchers headed by the Max Planck Institute for Solar System Research (MPS) and the Institute for Astrophysics of the University of Göttingen (Germany) present a comprehensive analysis now in the Astrophysical Journal. It is based on data from the twin space probes STEREO A and STEREO B, which – at that time still both operating – were in a favorable observation position behind the Sun at the crucial time. For the first time, the study shows a correlation between helium-3 and iron-rich particle flows and helical eruptions of ultraviolet radiation in the Sun's atmosphere. These could provide the necessary energy to accelerate the particles into space.

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Dragon
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Magnetic coil springs accelerate particles on the Sun Empty Re: Magnetic coil springs accelerate particles on the Sun

Post by Dragon Fri Jan 19, 2018 5:17 pm

Magnetic coil springs accelerate particles on the Sun Magneticcoil
Credit: ©️ NASA/MPS

This images show the measurements performed by the SECCHI/EUVI-instrument onboard STEREO from 29 April 2014. The image on the left was taken ten minutes prior to the one on the right. The emissions of extreme ultraviolet light (at a wavelength of 304 Å) clearly show a helical motion of the plasma flows.

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Dragon
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Magnetic coil springs accelerate particles on the Sun Empty Re: Magnetic coil springs accelerate particles on the Sun

Post by Dragon Fri Jan 19, 2018 5:17 pm



Grasping what drives that magnetic system is crucial for understanding the nature of space throughout the solar system: The sun's invisible magnetic field is responsible for everything from the solar explosions that cause space weather on Earth – such as auroras – to the interplanetary magnetic field and radiation through which our spacecraft journeying around the solar system must travel.

 

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