Abstract Low energy cosmic rays are modulated by the solar activity when they propagation in the heliosphere, leading to ambiguities in understanding their acceleration at sources and propagation in the Milky Way. By means of the precise measurements of the e − , e + , e − + e + , and e + / ( e − + e + ) spectra by AMS-02 near the Earth, as well as the very low energy measurements of the e − + e + fluxes by Voyager-1 far away from the Sun, we derive the local interstellar spectra (LIS) of e − and e + components individually. Our method is based on a non-parametric description of the LIS of e − and e + and a force-field solar modulation model. We then obtain the evolution of the solar modulation parameters based on the derived LIS and the monthly fluxes of cosmic ray e − and e + measured by AMS-02. To better fit the monthly data, additional renormalization factors for e − and e + have been multiplied to the modulated fluxes. We find that the inferred solar modulation parameters of positrons are in good agreement with that of cosmic ray nuclei, and the time evolutions of the solar modulation parameters of electrons and positrons differ after the reversal of the heliosphere magnetic field polarity, which shows clearly the charge-sign dependent modulation effect.

中文翻译：

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宇宙射线电子和正电子的局域星际光谱和太阳调制

摘要 低能宇宙射线在日光层中传播时受到太阳活动的调制，导致对其源处加速和在银河系中传播的理解含糊不清。通过 AMS-02 对地球附近的 e - 、e + 、e - + e + 和 e + / ( e - + e + ) 光谱的精确测量，以及航海者一号远离太阳的 e - + e + 通量，我们分别推导出 e - 和 e + 分量的局部星际光谱 (LIS)。我们的方法基于 e - 和 e + 的 LIS 的非参数描述以及力场太阳能调制模型。然后，我们根据导出的 LIS 和 AMS-02 测量的宇宙射线 e - 和 e + 月通量获得太阳调制参数的演变。为了更好地拟合月度数据，e - 和 e + 的额外重整化因子已乘以调制通量。我们发现推断的正电子太阳调制参数与宇宙线核子的太阳调制参数非常吻合，并且在日光层磁场极性反转后，电子和正电子太阳调制参数的时间演化不同，清楚地显示了电荷-符号相关调制效果。