A study by scientists from University College London and George Mason University in Virginia in the United States confirmed the source of potentially dangerous high-energy solar particles formed during coronal ejections on the Sun, and the authors also determined their composition.
During coronary ejections, the magnetic energy accumulated in active regions on the Sun is spent on accelerating huge masses of matter.
Particles of solar energy are released from the sun’s corona in huge clouds of plasma and magnetic field, and then form a high-speed solar wind.
These particles are highly energetic, and if they reach the Earth’s atmosphere, then the result is not only auroras, this phenomenon can potentially disrupt the operation of satellites, as well as create a risk of radiation exposure to people in orbit and in aircraft.
The new work has confirmed the hypothesis that the slow solar wind and high-energy solar particles come from different sources.
Our data support the hypothesis that these highly charged particles originate from plasma held in the sun’s atmosphere by strong magnetic fields. These particles are then accelerated by plasma eruptions that travel at a speed of several thousand kilometers per second.Stephanie Yardley, author of work from the Mallard Space Research Laboratory
The authors also analyzed the composition of high-energy solar particles and found that they have the same chemical signatures as the plasma of the chromosphere – the lower part of the solar atmosphere: increased contents of silicon and lower – sulfur.