| Calibration of Vector Magnetogram with the Nonlinear Least-squares Fitting Technique |
| |
| 作者姓名： | Jiang-Tao Su and Hong-Qi Zhang
National Astronomical Observatories Chinese Academy of Sciences Beijing |
| |
| 作者单位： | Jiang-Tao Su and Hong-Qi Zhang
National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012; |
| |
| 基金项目： | Support by the National Natural Science Foundation of China. |
| |
| 摘 要： | To acquire Stokes profiles from observations of a simple sunspot with the Video Vector Magnetograph at Huairou Solar Observing Station (HSOS), we scanned the FeI λ5324.19A line over the wavelength interval from 150mA redward of the line center to 150 mA blueward, in steps of 10 mA. With the technique of analytic inversion of Stokes profiles via nonlinear least-squares, we present the calibration coefficients for the HSOS vector magnetic magnetogram. We obtained the theoretical calibration error with linear expressions derived from the Unno-Becker equation under weak-field approximation.
|
| 关 键 词： | 磁力图 最小二乘方 太阳黑点 磁力记录计 |
Calibration of Vector Magnetogram with the Nonlinear Least-squares Fitting Technique |
| |
| Jiang-Tao Su and Hong-Qi Zhang
National Astronomical Observatories,Chinese Academy of Sciences,Beijing ,.Calibration of Vector Magnetogram with the Nonlinear Least-squares Fitting Technique[J].Chinese Journal of Astronomy and Astrophysics,2004,4(4):365-376. |
| |
| Authors: | Jiang-TaoSu Hong-QiZhang |
| |
| Institution: | NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012 |
| |
| Abstract: | |
| |
| Keywords: | Sun: activity - Sun: magnetic fields - sunspots |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
