Comparison of Loop Temperatures from Differential Emission Measure Tomography to Temperature Scale Heights

HUANG, ZHENGUANG; FRAZIN, RICHARD A.; VÁSQUEZ, ALBERTO M.; MANCHESTER IV, WARD B.

Santa Fe, New Mexico, EEUU

Workshop; 2010 SHINE Workshop; 2010

SHINE Consortium

Differential emission measure tomography (DEMT) produces the 3D local differential emission measure (LDEM) distribution. The 0th , 1th and 2nd moments of the LDEM are , and , where indicate averaging over a tomographic cell and Ne, Tm and Wt correspond to the electron density, temperature and temperature spread. We perform DEMT with STEREO-EUVI data from Carrigton rotation (CR) 2068 to produce the 3D LDEM on the tomographic grid. Using a potential field source surface (PFSS) model based on MDI data for the same period, we traced various field lines thorough the tomographic grid between heliocentric heights 1.035 and 1.995 Rs. Along each field line, we fit a hydrostatic model to Ne from LDEM. The temperature of the fitting model Tfit corresponds to the density scale height. Here we compare Tfit to along each line.