arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.01599astro-ph.HEphysics.space-ph
收藏

根据最近空间cosmic-ray数据太阳调制模拟的新结果

New results in solar modulation modeling in light of recent cosmic-ray data from space

Bruna Bertucci, Emanuele Fiandrini, Behrouz Khiali, Nicola Tomassetti

摘要:

由于在近地轨道进行的AMS-02和PAMELA飞行任务等空间实验,以及星际空间的旅行者号航天器,最近获得了大量多通道和时间分辨的银河宇宙线数据。在这里,我们提出了一个改进的测量验证模型的“太阳调制”的影响,即,由太阳磁活动的11年变率周期引起的日球层内GCR通量的时间演化。我们提出了我们的改进模型的日光层的结构,在日光层中的扩散,漂移和GCR粒子的能量损失的物理机制。我们提出了我们的结果的时间依赖性的关键模型参数和它们与太阳活动代理的关系。我们讨论的GCR运输磁湍流的影响,以及我们对太阳调制现象的理解的新见解。

英文摘要:

Thanks to space-borne experiments such as the AMS-02 and PAMELA missions in low-Earth orbit, along with the Voyager spacecrafts in the interstellar space, a large collection of multi-channel and time-resolved Galactic cosmic ray (GCR) data has recently become available. Here we present an improved measured-validated model of the "solar modulation" effect, i.e., the temporal evolution of the GCR flux inside the heliosphere caused by the 11-year variability cycle of the Sun's magnetic activity. We present our improved modeling of the structure of the heliosphere, the physical mechanisms of diffusion, drift, and energy losses of GCR particles in the heliosphere. We present our results for the temporal dependence of the key model parameters and their relationship with solar activity proxies. We discuss implications for the GCR transport in magnetic turbulence, and new insights on our understanding of the solar modulation phenomenon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑