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Solar origins of solar wind properties during the cycle 23 solar minimum and rising phase of cycle 24

机译:周期23的太阳风属性的太阳起源周期24的太阳最小和上升阶段

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摘要

The solar wind was originally envisioned using a simple dipolar corona/polar coronal hole sources picture, but modern observations and models, together with the recent unusual solar cycle minimum, have demonstrated the limitations of this picture. The solar surface fields in both polar and low-to-mid-latitude active region zones routinely produce coronal magnetic fields and related solar wind sources much more complex than a dipole. This makes low-to-mid latitude coronal holes and their associated streamer boundaries major contributors to what is observed in the ecliptic and affects the Earth. In this paper we use magnetogram-based coronal field models to describe the conditions that prevailed in the corona from the decline of cycle 23 into the rising phase of cycle 24. The results emphasize the need for adopting new views of what is ‘typical’ solar wind, even when the Sun is relatively inactive.
机译:最初使用简单的偶极日冕/极地日冕孔源图片来设想太阳风,但是现代观测和模型以及最近的异常太阳周期最小值已证明了该图片的局限性。极地和中低纬度活动区带的太阳表面场通常会产生日冕磁场,并且相关的太阳风源要比偶极子复杂得多。这使得低至中纬度的日冕孔及其相关的飘带边界成为黄道中观测到并影响地球的主要因素。在本文中,我们使用基于磁图的日冕场模型来描述从电晕23的下降到电晕24的上升阶段在电晕中普遍存在的条件。结果强调需要对“典型”太阳采取新的观点风,即使太阳相对不活跃。

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