The Best Particle Collider in the World? The Sun - by PaulMattSutter
a team of theoretical astrophysicists have proposed a solution. It seems that the mystery of the high-energy particles coming from the Sun is only skin deep. The photosphere is the outermost visible layer of the Sun which emits the light that we can see. The researchers confirmed earlier calculations that there is no process in the photosphere or just above it that has the required energy.
But the layer just below the photosphere, known as the chromosphere, can have enough energy. The turbulent motions of plasma within the chromosphere and the complex tangled magnetic fields found there can take particles to very high energy levels. The particles themselves are cosmic rays, which rain into the solar system. The cosmic rays enter the Sun and reach the chromosphere, where they get tangled up with the strong and complex magnetic fields there.
These results indicate that our Sun is capable of accelerating particles to very high energies very efficiently, even when there is nothing chaotic happening on the surface. Our Sun is a complex, dynamic, energetic star. And this work shows just how powerful it can be.
France Dernières Nouvelles, France Actualités
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