On a difference of the chromospheric background intensity between the equatorial and polar regions of the sun |
| |
| Authors: | C J Macris |
| |
| Institution: | (1) Astronomical Institute, National Observatory, Athens, Greece |
| |
| Abstract: | Small chromospheric emission centres (here defined as flocculi) were studied photometrically on K
2, 3, 2 spectroheliograms taken at the Arcetri Observatory. The intensity ratio between I
fl, the flocculus brightness, and I
chr, the brightness of the chromospheric background, was determined. A difference was found between the polar and the equatorial limb values of the ratio I
fl/I
chr. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
