Artículos de revistas
Three-Dimensional Electron Density from Tomographic Analysis of LASCO-C2 Images of the K-Corona Total Brightness
Fecha
2010-05Registro en:
Frazin, Richard A.; Lamy, Philippe; Llebaria, Antoine; Vasquez, Alberto Marcos; Three-Dimensional Electron Density from Tomographic Analysis of LASCO-C2 Images of the K-Corona Total Brightness; Springer; Solar Physics; 265; 1-2; 5-2010; 19-30
0038-0938
CONICET Digital
CONICET
Autor
Frazin, Richard A.
Lamy, Philippe
Llebaria, Antoine
Vasquez, Alberto Marcos
Resumen
We present the first quantitative three-dimensional (3D) tomographic reconstructions of electron density from coronagraph measurements of the K-corona’s total brightness (B) made by LASCO-C2 on SOHO. This is possible because new calibrations of the LASCO-C2 images in both polarized brightness (pB) and B have now been made for the entire mission. The B and pB reconstructions are compared, and the differences are explained in terms of line of sight weighting functions in Thomson scattering. We conclude that the LASCO-C2 B archive, which is vastly larger than the pB archive, will be a very valuable resource for determining the 3D electron density throughout the SOHO mission which started taking data in 1996.