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The region at which tubes of magnetic field liness reach the surface of the photosphere to form coronal loops
Wikipedia foundation.
Wikipedia foundation.
Coronal seismology — is a technique of studying the plasma of the Sun s corona with the use of magnetohydrodynamic (MHD) waves and oscillations. Magnetohydrodynamics studies the dynamics of electrically conducting fluids in this case the fluid is the coronal plasma.… … Wikipedia