Three-Dimensional Electron Density from Tomographic Analysis of LASCO-C2 Images of the K-Corona Total Brightness

被引：24

作者：

Frazin, Richard A. ^{[1
]}

Lamy, Philippe ^{[2
]}

Llebaria, Antoine ^{[2
]}

Vasquez, Alberto M. ^{[3
]}

机构：

[1] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA

[2] Univ Aix Marseille 1, Lab Astrophys Marseille, CNRS, F-13388 Marseille 13, France

[3] Univ Buenos Aires, Inst Astron & Fis Espacio, CONICET, Buenos Aires, DF, Argentina

来源：

SOLAR PHYSICS | 2010年 / 265卷 / 1-2期

基金：

美国国家航空航天局;

关键词：

Solar corona; Tomography; Electron density; Thomson scattering; WHITE-LIGHT IMAGES; SOLAR CORONA; OBJECTS; RECONSTRUCTION; INVERSION;

D O I：

10.1007/s11207-010-9557-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：19 / 30

页数：12

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