Contributed Talk - Splinter Solar

Friday, 15 September 2023, 14:30   (H 3005)

Chromospheric solar flare dynamics: Insights from the Ca II 854.2 nm and He I 1083.0 nm lines

C. Kuckein, M. Collados, A. Asensio Ramos, C. Diaz Baso, C. Quintero Noda, T. Felipe
Instituto de Astrofisica de Canarias (IAC)

Our understanding of solar flares remains a challenging task. While photospheric maps, magnetograms, and coronal imaging from satellites have often been used to study them, high-resolution spectroscopic information from the chromosphere is still scarce due to the unpredictability of flares, which makes it hard to observe them with ground-based high-resolution telescopes. In this study, we present observations of an M3.2 solar flare acquired with the Vacuum Tower Telescope (VTT, Tenerife) in May 2013. The flare was captured with the Echelle spectrograph in the Ca II 854.2 nm and He I 1083.0 nm spectral windows. We analyzed the spectral information using different inversion codes and retrieved physical parameters such as the line-of-sight velocity, among others. We report on the challenges of analyzing and understanding chromospheric data in flares and what we learn from the M-class flare.