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An unconventional solar fountain

19 Jul 2017, 13:41 UTC
An unconventional solar fountain
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Title: The association of a J-burst with a solar jetAuthors: D. E. Morosan et al.First Author’s Institution: School of Physics, Trinity College Dublin, IrelandStatus: Submitted to A&A, open access
Figure 1: Charged particles from the Sun interacting with the Earth’s magnetic excite particles in the atmosphere, creating dazzling light shows – the Aurorae. This image was taken on the International Space Station (ISS). Credit: NASAOur local star, the Sun, is an active star. It regularly sends streams of highly energetic particles hurtling towards our home planet, causing dazzling auroral displays at the poles, and occasionally we notice emissions in the radio regime. Back in July 2013, an unusual and very bright burst of radio wave energy was observed by the Low Frequency Array (LOFAR) based in the Netherlands, with our Sun being the likely culprit. Today’s bite will illustrate how J-bursts, an unconventional type of jet from the Sun, differ from the so-called type III bursts commonly observed. Also, we will describe their likely origin and the proposed mechanism to explain their odd characteristics.
Twist-it!Figure 2: Twisting of magnetic fields from the rotation of the Sun stores energy in entangled field lines. When field lines reorganise themselves, they release bursts ...

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