Author: Martin Benko

Date: May 5th, 2021 (10:00 am) - online

Title: Dynamic and magnetism of selected phenomena in the atmosphere of the Sun

Abstract: We investigate the dynamics and the magnetism within an active region AR12553
         using observations of several spectral lines (Ca I 10839, Fe I 6302,5, Si I 10827, He I 10830).
         The observations were acquired by GREGOR telescope, HINODE satellite with high spatial and spectral
         resolution. The SIR (Stokes Inversion based on Response functions) and HAZEL (Hanle and ZEeman Light) 
         were used to determine the basic physical parameters (such as absolute magnitude, inclination and 
         azimuth of the magnetic field vector) of the studied sunspot magnetic field in the photosphere and 
         the chromosphere. Dynamics properties of the sunspot were studied using Doppler velocities determined 
         using observed spectral lines formed in the photosphere and chromosphere. Finally, the intensity 
         measurement of GREGOR telescope was compared with slit-jaw images of satellite IRIS.