  This study analyzed the Doppler shift in the solar spectrum using the
Interface Region Imaging Spectrograph (IRIS). Two types of oscillations were
investigated: long period damp and short period damp. The researchers observed
periodic perturbations in the Doppler velocity oscillations of bright points
(BPs) in the chromosphere and transition region (TR). Deep learning techniques
were used to examine the statistical properties of damping in different solar
regions. The results showed variations in damping rates, with higher damping in
coronal hole areas. The study provided insights into the damping behavior of
BPs and contributed to our understanding of energy dissipation processes in the
solar chromosphere and TR.
