Virtual Nordic Dynamo Seminar

Of spicules and coronal swirling conduits

by Piyali Chatterjee (Indian Institute of Astrophysics)

Albano 3: 6335 - Hekto (10 seats) (Albano Building 3)

Albano 3: 6335 - Hekto (10 seats)

Albano Building 3


Bunches of swaying spicules in the solar chromosphere exhibit a variety of complex dynamics that are clearly observed in the images of coronal hole regions. By calculating the line-of-sight integrated emission from three-dimensional radiative magnetohydrodynamic simulations, we obtain multiple episodes of rotation amongst clusters of spicules also reported in the sequence of high cadence observations on the solar limb. This perception of rotation, according to our findings, is associated with hot swirling plasma columns that we label as coronal swirling conduits (CoSCo). Some tall CoSCos seen in our simulations can potentially form by feeding on spicules and channeling this energy to the upper reaches of the solar atmosphere, even while the corresponding spicules fall back sun-ward.