Abstract:
Propagating slow waves in coronal loops exhibit a damping that depends upon the frequency of the waves. In this
study we aim to investigate the relationship of the damping length
(
L
d
)
with the frequency of the propagating wave.
We present a 3D coronal loop model with uniform density and temperature and investigate the frequency-
dependent damping mechanism for the four chosen wave periods. We include the thermal conduction to damp the
waves as they propagate through the loop. The numerical model output has been forward modeled to generate
synthetic images of
SDO
/
AIA 171 and 193
Å
channels. The use of forward modeling, which incorporates the
atomic emission properties into the intensity images, allows us to directly compare our results with the real
observations. The results show that the damping lengths vary linearly with the periods. We also measure the
contributions of the emission properties on the damping lengths by using density values from the simulation. In
addition to that we have also calculated the theoretical dependence of
L
d
with wave periods and showed that it is
consistent with the results we obtained from the numerical modeling and earlier observations.
