Reconstruction and modeling of quiet-sun coronal loops

CECILIA MAC CORMACK; MARCELO LOPEZ FUENTES; CRISTINA H. MANDRINI; DIEGO G. LLOVERAS; ALBERTO M. VASQUEZ

Pucon

Conferencia; XII Latin American Conference on Space Geophysics; 2021

The solar corona is structured in the form of magnetic flux tubes or loops. In the case of the quiescentsun, identifying and observing coronal loops becomes a difficult task due to the lack of contrast of theloops with their environment. The Differential Emission Measure Tomographic (DEMT) techniqueprovides a 3D reconstruction of the thermal properties of the coronal plasma from sets of full-sunimages in different EUV channels. Combining DEMT results with magnetic field lines integrated from aglobal potential model of the coronal magnetic field (DEMT-PFSS), we are able to characterize physicalparameters of the coronal plasma along reconstructed loops. In this work we statistically analyze alarge number of reconstructed loops for the Carrington Rotation (CR) 2082 which corresponds to the minimum between Solar Cycles 23 and 24. We build typical loops according to different length rangesand we compare their density and temperature profiles with those obtained with the 1D hydrodynamic model Hydrodynamics and Radiation Code (HYDRAD), for constant and impulsive heating regimes. Weanalyze our results in the frame of different models of coronal heating.