Multi-Spacecraft 3D Differential Emission Measure Tomography of the Solar Corona: STEREO Results

VÁSQUEZ, ALBERTO M.; FRAZIN, RICHARD A.

Boletín de la Asociación Argentina de Astronomía

Asociación Argentina de Astronomía

Año: 2009 vol. 52 p. 23 - 26

1669-9521

We have recently developed a novel technique (called DEMT) for the empirical determination of the three-dimensional (3D) distribution of the solar corona differential emission measure through multi-spacecraft solar rotational tomography of extreme-ultaviolet (EUV) image time series (like those provided by EIT/SOHO and EUVI/STEREO). The technique allows, for the first time, to develop global 3D empirical maps of the coronal electron temperature and density, in the height range 1.0 to 1.25 Rs. DEMT constitutes a simple and powerful 3D analysis tool that obviates the need for structure specific modeling.