Abstracts Details


First Name * : Rekha
Last Name * : Jain
Affiliation * : University of Sheffield
Abstract Type * : Oral
Title * : Evidence of excitation sources of oscillations in solar coronal loops
Author(s) * : Rekha Jain (University of Sheffield) and Sandra Milena Conde Cuellar (University of Sao Paulo)
Abstract Session * : Thermal and magnetic coupling through the atmosphere
Abstract * : An investigation into sources of excitation of a coronal loop oscillation is carried out using the images obtained with the Interface Region Imaging Spectrometer (IRIS) and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). In this talk I will present our findings about the oscillations in AIA 171 Å wavelength passband and their link to the temporally aligned IRIS CII 1330 \AA images and the AIA 1700 Å images both of which sample the lower parts of the solar atmosphere. The simultaneous presence of periodicity at similar locations in the region of interest in all three wavelength passbands suggests that oscillations were excited in the plasma near the footpoints of the loop structure and subsequently propagated to higher heights. We further constrain the excitation sources using these observations.