IIA Institutional Repository

Browsing by Subject "Sun: Infrared"

Browsing by Subject "Sun: Infrared"

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  • Existence of Nanoparticle Dust Grains in the Inner Solar Corona? 
    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 ...
  • Fe XIV green/Fe XIII infrared line ratio diagnostics 
    Srivastava, A. K; Singh, J; Dwivedi, B. N; Muneer, S; Sakurai, T; Ichimoto, K (Astronomical Society of India, 2007-12)
    We consider the first 27-level atomic model of Fe XIII (5.9 K < log Te < 6.4 K) to estimate its ground level populations, taking account of electron as well as proton collisional excitations and de-excitations, radiative ...

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