Morphology of Solar Type II Bursts Caused by Shock Propagation through Turbulent and Inhomogeneous Coronal Plasma
We report radio observations of type II burst which has enormously rich and complex spectral morphology. We have exploited its herringbone pattern to study electron density turbulence in the solar corona. For the first time, we obtained properties of the density turbulence in the coronal streamer. This research copes with a relevant task in the physics of solar plasma – probing properties of density turbulence in the corona in a routine way.
A. Koval, et al. 2023, The Astrophysical Journal, 952, id.51

First Metis Detection of the Helium D3 Line Polarization in a Large Eruptive Prominence
Space coronagraph Metis on ESA's Solar Orbiter was developed by Italian-German-Czech consortium. It is capable of observing the solar corona in the visible light and in Lyman-alpha line simultaneously for the first time. We present unique observations of a large eruptive prominence and demonstrate unambiguous detection of the neutral-helium D3 line emission. We show how the prominence appears in the polarized light and investigate potential of Metis to detect prominence magnetic fields.
P. Heinzel, et al. 2023, The Astrophysical Journal Letters, 957, 10H

On the Physical Nature of the so-Called Prominence Tornadoes
While the name ‘prominence tornadoes’ suggests violent rotational dynamics, the analogy with a tornado strongly collides with the usual paradigm of the magnetic structure of solar prominences. In this comprehensive review, we resolved this long-standing paradox. We concluded that ‘prominence tornadoes’ do not differ from other stable prominences. The impression of the column-like silhouettes and helical motions is just a consequence of projection effects combined with small-scale dynamics.
S. Gunár, et al. 2023, Space Science Reviews 219:33