NONLINEAR FORCE-FREE FIELD MODELING OF A SOLAR ACTIVE REGION USING SDO/HMI AND SOLIS/VSM DATA
NONLINEAR FORCE-FREE FIELD MODELING OF A SOLAR ACTIVE REGION USING SDO/HMI AND SOLIS/VSM DATA
复制标题
使用 SDO/HMI 和 SOLIS/VSM 数据对太阳能活动区域进行非线性无力场建模
DOI:
10.1088/0004-6256/144/2/33
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Wiegelmann
中科院分区:
文献类型:
--
作者:
Thalmann;Pietarila;Wiegelmann
We use SDO/HMI and SOLIS/VSM photospheric magnetic field measurements to model the force-free coronal field above a solar active region, assuming magnetic forces dominate. We take measurement uncertainties caused by, eg, noise and the particular inversion technique, into account. After searching for the optimum modeling parameters for the particular data sets, we compare the resulting nonlinear force-free model fields. We show the degree of agreement of the coronal field reconstructions from the different data sources by comparing the relative free energy content, the vertical distribution of the magnetic pressure, and the vertically integrated current density. Though the longitudinal and transverse magnetic flux measured by the VSM and HMI is clearly different, we find considerable similarities in the modeled fields. This indicates the robustness of the algorithm we use to calculate the nonlinear force-free fields against differences and deficiencies of the photospheric vector maps used as an input. We also depict how much the absolute values of the total force-free, virial, and the free magnetic energy differ and how the orientation of the longitudinal and transverse components of the HMI-and VSM-based model volumes compare to each other.
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影响因子:
2.8
作者:
T. Wiegelmann;J. Thalmann;C. Schrijver;M. DeRosa;T. Metcalf
通讯作者:
T. Wiegelmann;J. Thalmann;C. Schrijver;M. DeRosa;T. Metcalf
影响因子:
6.5
作者:
T. Wiegelmann;L. Y. Chaouche;S. Solanki;A. Lagg
通讯作者:
A. Lagg
DOI:
10.1086/155495
发表时间:
1977
期刊:
The Astrophysical Journal
影响因子:
--
作者:
L. Auer;J. Heasley;L. House
通讯作者:
L. House
影响因子:
7.9
作者:
Jing, Ju;Wiegelmann, Thomas;Wang, Haimin
通讯作者:
Wang, Haimin
DOI:
10.1088/0004-637x/748/2/77
发表时间:
2012
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Hoeksema;Wiegelmann;T.Hayashi;Thalmann
通讯作者:
Thalmann