Speaker
Description
Twisted magnetic fields in the solar chromosphere are thought to give rise to a plethora of MHD waves and flows, enabling mass and energy channelling from the photosphere to the corona. Here we report on the statistical properties of observations of waves and flows in an apparently stable but relatively large-scale spiral structure (herein referred to as a “giant spiral”), close to disk centre, in H-alpha 656.3nm line core images, from the Swedish 1-m Solar Telescope (SST) CRisp Imaging SpectroPolarimeter (CRISP) instrument. The observations are analysed using CRISPEX in conjunction with a loop tracing algorithm called OCCULT2, allowing us to trace 100s of magnetic loops forming the giant spiral. Extracted magnetic loops are then read into a new edge detection code to investigate the true nature of field aligned flows and waves. We are interested in the relation between loop curvature and the properties of the waves and flows. We report on the correspondence between hot signatures in the (E)UV images of the lower corona and high frequency waves and flows in curved loops in the chromosphere, using co-spatial and co-temporal observations in the (E)UV with observations taken from the Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly (AIA).
