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How does the sun transfer energy to its upper atmosphere?



Sun
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An international team of researchers shed light on one of the mysteries of solar physics: how energy from the sun is transferred to the upper atmosphere of the star.

International scientists set out to explore the sun can warm the upper atmosphere to 1 meter degrees Fahrenheit, which is quite warm from the surface of the Sun.

Using new images from the Great Bear Solar Observatory (BBSO) of the New Jersey Institute of Technology (NJIT), the research team elaborated on what appears to be a possible mechanism. The mechanism consists of magnetized plasma jets, known as spicules, that jump from the upper atmosphere of the Sun into the corona and jump like geysers.

The team wrote a published statement ScienceIn this article, the team describes the basic properties of jet-like splices in a small diameter plasma structure of 200 to 500 kilometers in sunlight. The structures are constantly erupting along the area of ​​the Sun.

For the first time, researchers show where and how jets were produced and traveled, in some cases at a speed of about 100 kilometers per second into the chorus.

Solar Physicist Wenda Cao, director and co-author of BBSO, said, yüksek Unprecedented high-resolution observations from BBSO's Goode Solar Telescope. clearly demonstrates when plasma jets are strongly joined

“This is the first to see direct evidence of how spicules are produced. We followed these dynamic properties along the H-alpha spectral line to the foot points, measured the magnetic fields in their feet, captured the migration of the resulting magnetic elements, and verified the interaction of the opposing poles with the existing magnetic fields. "

Images captured in the extreme ultraviolet (EUV) spectrum of NASA's Solar Dynamics Observatory spacecraft were used to monitor the transport of energy in the corona. These observations have shown that heating the spicules to typical coronal temperatures is also common.

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