More than 20 years ago, researchers discovered solar flares. “dark spaces moving downward” He had identified mysterious movements that they described as But they could not explain these strange movements.
Usually, explosions consist of bright energy ejected from the Sun. But now “supra-arcade downstreams” These gaps, known as SADs or SADs (supra-arcade downflows), appear to flow downwards as if falling back into a star.
Researchers had long assumed they were related to a process called magnetic reconnection. This happens when magnetic fields separate, releasing an excess of energized radiation, and then come back together.
Kathy Reeves, co-author of the new study, “There are many magnetic fields on the Sun that point in all different directions. Eventually these magnetic fields are pushed together until they take on a new structure and release intense energy in the form of a Solar flare.” said.
It’s like stretching a rubber band and cutting it in the middle. It’s stretched and stretched until it’s thinner, so it’ll come back quickly.
But they don’t seem to be coming back right away. Patterns show downstreams are moving slower than expected, so it looks like something else is happening.
In the new study, scientists recorded images of the Sun to measure how its atmosphere was changing. They then created 3D simulations of the explosions and compared them to these images.
They found that most SADs do not arise as a result of magnetic reconnection. Instead, they are formed independently by the interaction of liquids of different densities.
Reeves, “These dark, finger-like spaces are essentially the absence of plasma. The density is much lower there than the plasma surrounding them.” used the expressions.
The research is described in an article titled “The Origin of Low-Intensity Plasma Downstreams Associated with Magnetic Reconnection in Solar Flares,” published today in the scientific journal Nature Astronomy.
Source: The Independent
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