Solar Flares: Magnetohydrodynamic Processes

This paper outlines the current understanding of solar flares, mainly focused on magnetohydrodynamic (MHD) processes responsible for producing a flare. Observations show that flares are one of the most explosive phenomena in the atmosphere of the Sun, releasing a huge amount of energy up to about 10 32 erg on the timescale of hours. Flares involve the heating of plasma, mass ejection, and particle acceleration that generates high-energy particles. The key physical processes for producing a flare are: the emergence of magnetic field from the solar interior to the solar atmosphere (flux emergence), local enhancement of electric current in the corona (formation of a current sheet), and rapid dissipation of…

• AS
  Astronomical Society of Japan
• NR
  National Research Foundation
• MO
  Ministry of Education, Culture, Sports, Science and Technology
• NR
  National Research Foundation of Korea