Simple modeling to explore temperatures, heated temperature, and Kappa values of a current sheet observation

  • Lee, Jin-Yi (Kyung Hee University) ;
  • Raymond, John C. (The Center for Astrophysics | Harvard & Smithsonian) ;
  • Reeves, Katharine K. (The Center for Astrophysics | Harvard & Smithsonian) ;
  • Shen, Chengcai (The Center for Astrophysics | Harvard & Smithsonian) ;
  • Kahler, Stephen (Air Force Research Laboratory) ;
  • Moon, Yong-Jae (Kyung Hee University) ;
  • Kim, Yeon-Han (Korea Astronomy & Space Science Institute)
  • 발행 : 2021.10.13

초록

We explore the range of possibilities of temperatures, heated temperature, and Kappa values of a current sheet observation on 2017 September 10. First, we construct a grid model with rapid heating (Theat) and various Kappa (κ) values. We assume a simple density model and use adiabatic cooling to set the temperature during expansion. Next, we calculate the ion fractions using a time-dependent ionization model with adiabatic cooling and various Kappa values. The calculated ion fractions are used to simulate the DNs of the Atmospheric Imaging Assembly on board the Solar Dynamic Observatory. Then, we explore the possible range of the temperatures and Kappa values, comparing the simulated images with the observations. Finally, we discuss the range of the heated temperature and Kappa values and whether the result of this study suggests continuous heating of the current sheet plasma during the expansion.

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