On the disagreement between atmospheric and coronal electron densities

被引：12

作者：

Esser, R ^{[1
]}

Sasselov, D ^{[1
]}

机构：

[1] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 521卷 / 02期

基金：

美国国家航空航天局;

关键词：

solar wind; Sun : atmosphere; Sun : corona;

D O I：

10.1086/312186

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Electron densities in the lower solar atmosphere (photosphere and chromosphere) are derived using a number of different atmospheric models which are constrained by observed spectral lines. Comparing these atmospheric densities to coronal electron densities derived from polarization brightness measurements in the region from about 1.1 to several solar radii, it is shown that there is a discrepancy between the two sets of densities. The atmospheric electron densities are in agreement with a density of maximum 10(7) cm(-3) at 1.1 R.. The polarized brightness densities given in the literature are typically 5 x 10(7) cm(-3) or higher. It is shown that this discrepancy might be due to an overestimation of the coronal electron densities below 1.5-2 R..

引用

页码：L145 / L148

页数：4

共 23 条

[1] CHROMOSPHERIC AND CORONAL HEATING [J].