Speaker
Description
First Name: Petr
Last Name: Heinzel
Affiliation: Czech Academy of Sciences
All Authors: P. Heinzel, S. Jejcic, G. Russano, V. Andretta, R. Susino, J. Stepan, P. Schwartz and the Metis team
Abstract: We have derived the physical parameters of a bright eruptive prominence detected in the core of a CME by using simultaneous SolO/Metis hydrogen L-alpha and VL images. Our analysis is focused on the event observed on April 25-26, 2021. With triangulation method the de-projected height and velocity of the structure are estimated. We have evaluated the contribution of the He-D3 line to total VL channel signal. We developed a diagnostic tool based on our 2D non-LTE radiative transfer code which can be used for fast-moving structures. Considering the observed L-alpha intensity and electron column density we estimate the electron density and the effective thickness of the prominence plasma at a given temperature.