论文标题
太阳能大规模磁场的主要组件中的循环变化
Cyclic variations in the main components of the solar large-scale magnetic field
论文作者
论文摘要
我们考虑了太阳大规模磁场的偶极子和四极组件的变化。轴向和赤道偶极子在过去四个周期中均表现出系统的减少，这是根据太阳能活动的总体下降。偶极子从极区域到中纬度的杆的过渡很快就会发生，因此杆的经度变化不大。然而，随着时间的流逝，这个倾斜的偶极区域转移到较大的纵向，这表明偶极旋转的加速度。平均旋转速率超过卡林顿速度0.6％。四极杆的行为截然不同。它在过去四个周期中的减少远小于偶极矩。与黑子数相比，四个周期的四翼和偶极矩的比率增加了两次，而黑子数的比例在相同的时间间隔内显示了两倍。四极旋转的旋转状况如何，一个符号的两极的平均经度在四个循环上降低了600度，这表明平均旋转速率低于Carrington速度0.28％。但是，我们没有看到任何结论性的证据表明，在讨论期间，四极对称模式与偶极模式一起在太阳上激动了。
We considered variations the dipole and the quadrupole components of the solar large-scale magnetic field. Both the axial and the equatorial dipoles exhibit a systematic decrease in the past four cycles in accordance with the general decrease of solar activity. The transition of the pole of a dipole from the polar region to mid latitudes occurs rather quickly, so that the longitude of the pole changes little. With time, however, this inclined dipole region shifts to larger longitudes, which suggests an acceleration of the dipole rotation. The mean rotation rate exceeds the Carrington velocity by 0.6%. The behavior of the quadrupole differs dramatically. Its decrease over last four cycles was much smaller than that of the dipole moment. The ratio of the quadrupole and dipole moments has increased for four cycles more than twice in contrast to the sunspot numbers, which displayed a twofold decrease for the same time interval. What about quadrupole rotation, the mean longitude of the poles of one sign decreased by 600 degrees over four cycles, which suggests that the mean rotation rate was lower than the Carrington velocity by 0.28%. We do not see however any conclusive evidence that, in the period under discussion, a mode of quadrupole symmetry was excited on the Sun along with the dipole mode.
