Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Poster

P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM19] Heliosphere and Interplanetary Space

Thu. May 24, 2018 10:45 AM - 12:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Ken Tsubouchi(Tokyo Institute of Technology), Masaki N Nishino(Institute for Space-Earth Environmental Research, Nagoya University), Yasuhiro Nariyuki(富山大学人間発達科学部)

[PEM19-P02] Case study of wavelength 2791.6 Å at flare ribbons by IRIS

*Yu chen1, Ya-Hui Yang1 (1.Graduate institute of space science, National Central University )

The upward and downward motions of chromospheric plasma, which are called chromospheric evaporation and condensation, can be observed during solar flares. The Mg II lines of IRIS provide a good opportunity to study the evolution of chromospheric plasma. Here we particularly focus on the emission property of Mg II triplet line 2791.6 Å in the 2014/10/27 M7.1 flare. To understand the behaviors of Mg II lines, two localized areas with flare brightening feature are selected for analysis. The Mg II h and k lines are also used for comparison. By combining with IRIS, GOES, and RHESSI observations, we find that the 2791.6 Å has different evolution profiles at these two areas. Possible explanations will be discussed in this study.