摘要: The effects are examined of acoustic gravity waves with long and short periods on the solar profile of the Potassium 1 7699 line using a dynamic model of line formation. First we studied the kinetic equilibrium of the K 1 atoms in... 展开 The effects are examined of acoustic gravity waves with long and short periods on the solar profile of the Potassium 1 7699 line using a dynamic model of line formation. First we studied the kinetic equilibrium of the K 1 atoms in a static atmosphere confirming with up to date atomic data and atmosphere model that a good fit of the resonance line 7699 is possible only when non-LTE effects are accounted for. Then the static non-LTE line source function and lower level population are used as input data for calculating the line formation in the presence of waves. The time behaviour of the synthetic profiles corresponding to 300 s and 30 s waves is extensively discussed. The characteristic redshift induced by the 30 s wave is explained within the framework of the S-S line formation model. Long-period waves yield an anticorrelation between the asymmetry at different residual intensities and the line core shift, as observed. The short-period waves with velocity amplitude of about 100 m/s (as the base of the photosphere) produce a mean bisector whose lower part has a slope in agreement with the observed one. The efficiency of waves to produce macro and microturbulence is also discussed. 收起