Ion Composition Properties in Interplanetary Coronal Mass Ejection (ICME) and Post-CME Current Sheet (CS)
Abstract
Coronal mass ejections (CMEs) are among the most energetic solar events. Solar energetic particles (SEPs) are accelerated at a CME shock. The SEPs, when reaching Earth, can cause severe space weather effects such as satellites, navigation, communication, and Humans in space. We investigate the heating inside interplanetary coronal mass ejections (ICMEs) using variations of ion composition with Kappa (k) electron velocity distributions, which represent supra-thermal populations. The ion compositions are calculated by using a time-dependent ionization model with various kappa values along a post-CME current sheet (CS) as CME erupts. In this work, we investigate 1) what causes the variations in ion charge composition in ICMEs and how they are related to the physical conditions at the magnetic reconnection site 2) What the range of kappa values can explain the observed ion charge composition structure inside ICMEs and what will be the most probable heating and acceleration process to satisfy the observed ion composition structure inside ICMEs. This work impacts the increase of knowledge for supra-thermal particle populations in the solar-terrestrial environment and leads to learning the more proper interpretation of the physical process of heating and acceleration of erupting plasma.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 2023
- Accession Number
- AD1226808
Entities
People
- Jin-yi Lee
Organizations
- Kyung Hee University