Abstract Details


Name: Sunil Kumar
Affiliation: Aryabhatta Research Institute of Observational Sciences (ARIES), Naiital
Conference ID: TVS202510171
Title: Extracting the true wave parameters of slow waves using SDO/AIA and SolO/EUI
Authors and Co-Authors:
Abstract Type: Contributory Presentation
Abstract: Coronal loops, the basic building blocks of active regions on the Sun, exhibit various kinds of dynamics, including waves and flows. We analyzed the open fan coronal loops that are rooted in the sunspot. The slow magneto-acoustic waves are exhibited in these open fan loops. In imaging observations, we get the projection effects. To remove the projection effect, we must determine the 3D coordinates and inclination angles of the projected feature. To achieve this, we implemented triangulation methods utilizing dual-vantage point observations from the Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA) and the Solar Orbiter/Extreme Ultraviolet Imager (SolO/EUI). Both these modern observatories capture images of the Sun at a good cadence and high resolution. We derived the time-period, true damping length, and true wave propagation speeds using the projection angle obtained from triangulation, and consequently, the temperature within a selected sample of loops. We obtain the dominant time-period, ~3 minutes, velocity, ~130 km/s, and temperature is approx. 0.84 MK. However, the damping length shows significant variation, ranging from 5 to 10 Mm. By investigating a large sample, we aim to investigate the dependence of temperature on the true damping length of propagating slow magnetoacoustic waves and compare the results with theoretical predictions.