Advances in Astronomy and Space Physics, Volume 4, Issue 1-2, PP. 32-37 (2014)
doi: 10.17721/2227-1481.4.32-37
doi: 10.17721/2227-1481.4.32-37
The dynamics of the observed solar granulation:
spatio-temporal variations of line of sight velocity
and thermodynamic parameters
spatio-temporal variations of line of sight velocity
and thermodynamic parameters
Astronomical Observatory, Ivan Franko National University of Lviv, Kyryla i Mefodia str., 8, 79005, Lviv, Ukraine
Abstract
We investigated the dynamics of solar granulation, using the neutral iron line λ ≈ 639.3 nm profiles from high-spatial resolution observations around the centre of the solar disc, in the non-perturbed region. We reproduced spatio-temporal variations of kinematic and thermodynamic parameters of solar convection at different heights of the solar photosphere (h = −25..550 km). The acoustic waves were removed by k - ω filtration. We analysed the temporal changes of these variations within convective cells.
Keywords:
solar granulation, line of sight velocity, thermodynamic parameters