BINA

Abstract

In a joint project between KU Leuven and ARIES, Nainital, models were made for slow waves in solar coronal loops. The left figure (clickable to play a movie) shows a recent observation with ESA's Solar Orbiter mission. The slow waves have speeds of 200km/s and periods of around 5 minutes. The slow waves are excellent tools for measuring the thermal properties of the solar corona.

Within the collaboration, we have constructed a coronal loop simulation, where we have launched slow waves. This is shown in the top right graph. The results of this simulation are shown in the bottom right graph: the wave pulse propagation is shown with the blue to pink line, and our new analytical theory is shown with the dark blue line. The fit between the new theory and simulations is excellent (because the dark blue line should match the peaks of the curves below).
With this new theory, we can now better probe the temperature distribution of plasma in a coronal loop.

Collaborators

Name	Affiliation & Contact
Tom Van Doorsselaere	KU Leuven (Belgium) Tom V D
Krishna Prasad	ARIES( India)