论文标题
约束宇宙射线太阳能调制的电荷，时间和刚度依赖性，并在太阳周期中使用AMS-02观测值24
Constraining the Charge-, Time- and Rigidity-Dependence of Cosmic-Ray Solar Modulation with AMS-02 Observations during Solar Cycle 24
论文作者
论文摘要
太阳阻碍了我们对宇宙射线来源及其在星际介质中传播的基本理论理解，即通过太阳风影响观察到的宇宙射线光谱。该效果称为太阳调制。最近发布了来自Alpha磁光谱仪（AMS-02）的宇宙射线观测值，以及从高级组成资源管理器和Wilcox天文台公开可用的太阳风能测量值，使我们能够测试太阳能调制的时间，电荷和刚性依赖性的分析模型。我们依靠在局部地球磁场和地球层电流板的倾斜角度关联测量，以建模宇宙射线太阳能调制的时间依赖性和振幅。我们发现证据表明太阳能调制的电荷和刚性依赖性在太阳周期24时期。我们对模型太阳能调制的分析处方可以很好地解释从1到10 GV的刚性范围内，带正电荷的宇宙射线通量的大规模时间进化。我们还发现，由于它们在向内传播时经历的复杂且迅速发展的结构，因此在24周期的第一年测得的宇宙电子通量不太容易解释。
Our basic theoretical understanding of the sources of cosmic rays and their propagation through the interstellar medium is hindered by the Sun, that through the solar wind affects the observed cosmic-ray spectra. This effect is known as solar modulation. Recently released cosmic-ray observations from the Alpha Magnetic Spectrometer (AMS-02) and publicly available measurements of the solar wind properties from the Advanced Composition Explorer and the Wilcox observatory allow us to test the analytical modeling of the time-, charge- and rigidity-dependence of solar modulation. We rely on associating measurements on the local heliospheric magnetic field and the heliospheric current sheet's tilt angle, to model the time-dependence and amplitude of cosmic-ray solar modulation. We find evidence for the solar modulation's charge- and rigidity-dependence during the era of solar cycle 24. Our analytic prescription to model solar modulation can explain well the large-scale time-evolution of positively charged cosmic-ray fluxes in the range of rigidities from 1 to 10 GV. We also find that cosmic-ray electron fluxes measured during the first years of cycle 24 are less trivial to explain, due to the complex and rapidly evolving structure of the Heliosphere's magnetic field that they experienced as they propagated inwards.
