Formation of Solar Calcium H and K Bright Grains
The Astrophysical Journal1997Vol. 481(1), pp. 500–514
Citations Over TimeTop 10% of 1997 papers
Abstract
We have simulated the generation of Ca II H2V bright grains by acoustic shocks. We employ a one-dimensional, non-LTE radiation-hydrodynamic code, with six-level model atoms for hydrogen and singly ionized calcium. We drive acoustic waves through a stratified radiative equilibrium atmosphere by a piston, whose velocity is chosen to match the Doppler shift observed in the Fe I 396.68 nm line in the H line wing, formed at about 260 km above τ500 = 1.
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