The solar corona is a structure that extends for several solar radii and is filled with low-density plasma at temperatures of millions of degrees. What heats coronal plasma to such extreme temperatures? It appears to be a combination of complex magnetic phenomena. X-ray and UV observations of the Sun reveal an atmosphere rich in bright structures that host million-degree
The corona is the outermost part of the Solar atmosphere, filled with plasma at temperatures reaching several million degrees. The mechanism responsible for heating the Solar plasma to these temperatures is a long-standing problem. It began in the 1930s when physicists Bengt Edlen and Walter Grotrian proposed that the mysterious spectroscopic lines observed in the corona were not due to
