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A study of line widths and kinetic parameters of ions in the solar corona

Wu, D. J.; Zhao, G. Q.; Wang, C. B.

Solar extreme-ultraviolet (EUV) lines emitted by highly charged ions have been extensively studied to discuss the issue of coronal heating and solar wind acceleration. Based on observations of the polar corona by the SUMER/SOHO spectrometer, this paper investigates the relation between the line widths and kinetic parameters of ions. It is shown th…

Determination of coronal magnetic fields from 10 to 26R_⊙ using the density compression ratios of CME-driven shocks

Moon, Y. -J.; Shanmugaraju, A.; Suresh, K.

Recently, the estimation of coronal magnetic field using new methods, such as standoff distance method or density compression ratio method has been reported. In the present work, we utilized the density compression ratio of CME-driven shocks for 10 events at 29 different locations in the upper solar corona (10–26R_⊙) and determined the c…