Singh, J; Sakurai, T; Ichimoto, K; Hagino, M; Yamamoto, T. T
(The American Astronomical Society, 2004-06)
Motivated by the recent paper by Habbal et al., we have made spectroscopic observations in the wavelength range of 1072.8-1079.0 nm of the solar corona above the coronal hole region on several days using a coronagraph. We ...