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Galactic Cosmic Rays and Parameters of the Interplanetary Medium Near Solar Activity Minima

机译:银河系宇宙射线和太阳活动极小值附近的行星际介质的参数

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摘要

The time behavior of intensity of cosmic rays with relatively low (~1—6 GeV) and high (>10 GeV) energies are considered together with characteristics influencing the modulation of cosmic rays in the helio-sphere. The periods under study are close to solar activity minima in cycles 21/22, 22/23, and 23/24. Diffusion and convection in small-scale magnetic fields of the heliosphere are demonstrated to play some role only at sufficiently weak disturbances of the field (B/δ>B > 1.3). In this case, a negative correlation is observed between B/δB and a tilt of the surface of the heliospheric current sheet. The analysis of characteristics of the interplanetary medium in periods of solar activity minima shows that the energy anomaly of cosmic rays in the minimum of cycles 23/24 is caused by deficit of high energy particles rather than by an excess of particles of relatively small energies.
机译:考虑了具有相对较低(〜1-6 GeV)能量和较高(> 10 GeV)能量的宇宙射线强度的时间行为,以及影响日光层中宇宙射线调制的特性。研究周期接近周期21 / 22、22 / 23和23/24的太阳活动最小值。事实证明,仅在足够弱的磁场扰动(B /δ> B> 1.3)下,在小规模日磁场中的扩散和对流才起作用。在这种情况下,在B /δB和日球电流片的表面的倾斜之间观察到负相关。对太阳活动极小时期的行星际介质特性的分析表明,在最小周期23/24中,宇宙射线的能量异常是由高能粒子的缺乏而不是由相对较小能量的粒子过多引起的。

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  • 来源
    《Cosmic research》 |2013年第1期|29-36|共8页
  • 作者单位

    Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia;

    Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia;

    Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia;

    Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia;

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