January 29, 2023


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The sun is exposed to an amazing phenomenon.  This was the first time you saw them Solar Orbiter

The sun is exposed to an amazing phenomenon. This was the first time you saw them Solar Orbiter

Scientists associated with the study presented their achievements in the pages Astrophysical Journal Letters. The main character of the diffusion is, of course, the solar wind, which is a continuous stream of charged particles that come from the outer atmosphere of the Sun. It is known as the solar corona and from there the wind enters the space where the Earth is also present.

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The mechanisms of the acceleration of the solar wind, its complex dynamics, its interaction with the solar magnetic field and the observed heating of the plasma constitute great mysteries for scientists studying the performance of our star. One such puzzle was about sudden and temporary reversals of the magnetic field.

It was first observed in the 1990s by NASA’s Ulysses spacecraft. Parker Solar Probe has also provided information on these setbacks in the recent past. As Gary Zank of the Center for Space Plasma and Aerospace Research explains, the phenomenon consists of refraction of a magnetic field, with the most extreme case being refraction of the S-shaped field line, which reverses direction twice.

The sun experiences sudden and temporary reversals in its magnetic field

The new findings in this case are the result of analyzes of the coronal images taken by the Metis corograph aboard the Solar Orbiter. The images were taken on March 25 and allowed global observation of the entire structure, not just small areas. By the way, the team members confirmed the assumptions two years ago, when there were hypotheses that the reflections would arise as a result of magnetic reconnection over the surface of the Sun.

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This is exactly the result we were hoping for with the Solar Orbiter. With each orbit, we get more data from a group of ten devices. Based on results like these, we will refine the scheduled observations of the upcoming solar module meeting with the Sun to understand how the Sun relates to the solar system’s broader magnetic environment. This was Solar Orbiter’s first close pass to the Sun, so expect many other exciting results to come.Daniel Mueller of the European Space Agency explains