Global Coronal Plasma Diagnostics Based on Multislit Extreme-ultraviolet Spectroscopy

• DOI: 10.3847/1538-4357/ad4114
• Publication Date: 2024-05-30T10:51:50Z
• Authors: Lami 霖誼 Chan 陳; Hui Tian; Xianyu Liu; Tibor Török; Xianyong Bai; Yufei Feng; Dipankar Banerjee
• Keywords: Extreme ultraviolet; Extreme Ultraviolet Lithography; Corona (planetary geology); Ultraviolet; Balmer series

Abstract Full-disk spectroscopic observations of the solar corona are highly desired to forecast eruptions and their impact on planets uncover origin wind. In this paper, we introduce a new multislit design (five slits) obtain extreme-ultraviolet (EUV) spectra simultaneously. The selected spectrometer wavelength range (184–197 Å) contains several bright EUV lines that can be used for spectral diagnostics. approach offers an unprecedented way efficiently global data but ambiguity from different slits should resolved. Using numerical simulation corona, primarily concentrate optimization disambiguation process, with objective extracting decomposed information six primary lines. This subsequently facilitates comprehensive series plasma diagnostics, including density (Fe xii 195.12/186.89 Å), Doppler velocity 193.51 line width temperature diagnostics viii 185.21 Å, Fe x 184.54 xi 188.22 Å). We find good agreement between forward modeling parameters inverted results at initial eruption stage coronal mass ejection, indicating robustness decomposition method its immense potential monitoring corona.