Properties of solar prominences as obtained by SDO/AIA and the associated differential emission measure analysis

Monday, 15 December 2014
Amandeep Singh Bains1, Bo Li1 and Shadia R Habbal2, (1)Shandong University at Weihai, Weihai, China, (2)Institute for Astronomy, Honolulu, HI, United States
Prominences are an inherent component of the solar corona. They are significantly cooler than the surrounding corona, indicating that they are thermally isolated. Therefore the prominence-corona transition region (PCTR) plays an important role to establish an equilibrium system comprising prominences and the ambient corona. We present a study on solar prominences, PCTR and the quiet Sun using the SDO/AIA observations. The intensity profiles of different spectral lines show that there is {\bf an intrinsic} temperature variation inside prominences. We then examine the temperature and density properties of prominences, PCTR and the quiet Sun by using the differential emission measure(DEM) analysis whereby the six-passband EUV observations are employed. Our DEM analysis shows that the temperature of the PCTR varies from logT6.0 to logT6.2.