Research has just discovered why the solar corona is a million degrees hotter and hotter than the surface. They took photos of the corona from NASA's Solar Dynamics Observatory. ( NASA / GSFC / Solar Dynamics Observatory )
For many years scientists have been barely able to study the solar corona, but recent research has just confirmed the unexplored energy responsible for its high temperature
What did you discover about the Corona?
A team of astrophysicists has recently discovered the physical factors that lead to warming of the solar corona to 1
The results were published in the Astrophysical Journal .
"We knew that at the interface between the photosphere and the … The surface of the sun – and the corona, given the striking differences in chemical composition between the two layers and the sharp rise in plasma temperatures at this junction" said Gregory Fleishman, professor at the New Jersey Institute of Technology and lead author of the study
The researchers traced solar corona regions from NASA's Solar Dynamics Observatory. They noticed higher heavy metal ions in magnetic flux tubes that have an electric current.
How did you discover the corona temperature?
For many years humans have been unable to study the solar corona. In most cases, it is largely invisible to the human eye. Scientists knew that the corona as well as other regions of the sun were hotter than the actual star. However, without studying it properly, they could not determine the reason for this phenomenon.
While studying the observations of the corona, the researchers took vivid pictures. The photos were taken in the extreme (shortwave) ultraviolet (EUV band). The researchers showed massive concentrations of multiply charged metals in the corona, the outermost layer. The photosphere, which is the sun's deepest visible layer, has single-electron ions of hydrogen. This represented an imbalance that explains the temperature differences.
What does this discovery mean?
After discovering this, the researchers said that their achievement was "one of the biggest challenges for solar modeling."
"These observations indicate that the corona may contain even more thermal energy than is observed directly in the EUV region and that we have not yet considered," Fleishman said.
The researchers plan to combine their data with the results of other scientists to elucidate any differences in the energy that has been discovered.
Iron particles were also discovered in "ion traps" within the corona. This new discovery may explain why former scientists were unable to capture energy in the EUV area.
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