Diagnostics of temperature and blue-shifted velocity using soft X-ray spectra from the Macao Science Satellite-1  

作　　者：JianPing Li Xu Yang Dong Li JinHua Shen Lei Yang Ya Wang LianSheng Li YongQiang Shi HaiSheng Ji 

机构地区：[1]Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China [2]Big Bear Solar Observatory 40386 N Shore Ln Big Bear,CA 92314,USA [3]Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Ürümqi 830011,China [4]Beijing Institute of Control Engineering,Beijing 100190,China

出　　处：《Earth and Planetary Physics》2025年第3期740-751,共12页地球与行星物理(英文版)

摘　　要：Using the new soft X-ray data from the Macao Science Satellite-1,we studied a solar flare that occurred on 22 June 2023.We found that the centroids of the Ca(around 3.9 keV)and Fe(around 6.7 keV)line features exhibit a rapid shift toward higher energy channels during the flare's rising phase,followed by a gradual decrease during the decay phase.Through precise energy calibration,the centroids are determined with high accuracy.Temperature and velocity are then self-consistently derived by comparing the centroids with those calculated from the synthesized line features using the latest CHIANTI atomic database(ver.10.1).The calculated maximum velocity reaches up to 710±60 km s-1,which significantly exceeds the previously reported values.Our results suggest that the entire shift of soft X-ray lines may occur during the process of chromospheric evaporation.

关 键 词：Macao Science Satellite-1 solar flares soft X-ray lines chromospheric evaporation 

分 类 号：P182[天文地球—天文学]