IAFE 05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Three-Dimensional Electron Density from Tomographic Analysis of LASCO-C2 Images of the K-Corona Total Brightness
Autor/es:
FRAZIN, RICHARD A.; LAMY, PHILIPPE; LLEBARIA, ANTOINE; VÁSQUEZ, ALBERTO M.
Revista:
SOLAR PHYSICS
Editorial:
Springer Netherlands
Referencias:
Año: 2010 vol. 265 p. 19 - 30
ISSN:
0038-0938
Resumen:
We present the first quantitative three-dimensional (3D) tomographic reconstructions of electron density from coronagraph measurements of the K-coronas 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.
