SH31B-2417
Study on the temperature and density of erupting prominences associated with coronal mass ejections
Wednesday, 16 December 2015
Poster Hall (Moscone South)
Jin-Yi Lee1, John C Raymond2, Kathy Reeves2, Yong-Jae Moon1 and Kap-Sung Kim1, (1)Kyung Hee University, Yongin, South Korea, (2)Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States
Abstract:
We investigate the densities and temperatures of erupting prominences associated with coronal mass ejections and X-ray flares. Several events observed in EUV by AIA/SDO show that the absorption features of prominences/filaments change to emission features during their eruptions, which indicates the heating of the erupting plasma. These events are also observed in X-rays by Hinode/XRT. We estimate the temperatures and densities of the erupting prominences/filaments using absorption properties of hydrogen and helium in different passbands. We estimate the temperatures and densities of the erupting plasma in emission features using differential emission measure method, which uses both EUV and X-ray observations. These events show very hot plasma of higher than 10 MK. We discuss the heating of the erupting plasmas comparing the energies obtained from the estimated the temperatures and densities during the eruption.
