Solar Magnetic Carpet III: Coronal Modelling of Synthetic Magnetograms
Solar Magnetic Carpet III: Coronal Modelling of Synthetic Magnetograms
复制标题
太阳磁毯 III:合成磁图的日冕建模
DOI:
10.1007/s11207-013-0272-1
复制
发表时间:
2013
期刊:
影响因子:
2.8
通讯作者:
Meyer K
中科院分区:
文献类型:
--
作者:
Meyer K
This article is the third in a series working towards the construction of a realistic, evolving, non-linear force-free coronal-field model for the solar magnetic carpet. Here, we present preliminary results of 3D time-dependent simulations of the small-scale coronal field of the magnetic carpet. Four simulations are considered, each with the same evolving photospheric boundary condition: a 48-hour time series of synthetic magnetograms produced from the model of Meyeret al.(Solar Phys.272, 29, 2011). Three simulations include a uniform, overlying coronal magnetic field of differing strength, the fourth simulation includes no overlying field. The build-up, storage, and dissipation of magnetic energy within the simulations is studied. In particular, we study their dependence upon the evolution of the photospheric magnetic field and the strength of the overlying coronal field. We also consider where energy is stored and dissipated within the coronal field. The free magnetic energy built up is found to be more than sufficient to power small-scale, transient phenomena such as nanoflares and X-ray bright points, with the bulk of the free energy found to be stored low down, between 0.5 – 0.8 Mm. The energy dissipated is currently found to be too small to account for the heating of the entire quiet-Sun corona. However, the form and location of energy-dissipation regions qualitatively agree with what is observed on small scales on the Sun. Future MHD modelling using the same synthetic magnetograms may lead to a higher energy release.
登录
查看更多内容
DOI:
10.1088/0004-637x/710/2/1480
发表时间:
2009-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
C. Schrijver
通讯作者:
C. Schrijver
影响因子:
2.8
作者:
Meyer K
通讯作者:
Meyer K
DOI:
10.1088/0004-637x/705/1/347
发表时间:
2009
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Berger;M. Asgari
通讯作者:
M. Asgari
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
Haimin Wang;H. Zirin
通讯作者:
H. Zirin
DOI:
10.1086/303528
发表时间:
1997-01
期刊:
The Astrophysical Journal
影响因子:
--
作者:
C. Schrijver;H. Hagenaar;A. Title
通讯作者:
C. Schrijver;H. Hagenaar;A. Title