摘要
探讨了复杂磁结构上空日冕物理状态与磁剪切的关系.结果表明在强磁场的磁中性线上方磁剪切会引起具有强电流和较强等离子体压力的低磁弧.这可解释Yohkoh
By using the finite element method, a partial differential equation (magnetohydrostatic equation) is solved. The plasma pressure and coronal magnetic field of the multipolar active region are determined. The authors have found that the height of the magnetic field lines above the neutral line of strong magnetic field decreases as the magnetic shearing increases. Both the electric current density and plasma pressure of the low lying magnetic loops become higher. It is believed that the low lying magnetic loops store eruption energy before solar high energy eruption in the complex multipolar active region. This may be used to interpret the preflare soft X ray data of the Yohkoh satellite. It has also been found that the coronal plasma pressure increases with the magnetic shearing. This implies that the increase of coronal mass density may be the source of coronal mass ejection.
出处
《天文学报》
CSCD
北大核心
1999年第3期272-278,共7页
Acta Astronomica Sinica
基金
中国科学院国家天文观测中心
天文委员会及江苏省自然科学基金