implicationsoncosmicrayinjectionandpropagationparametersfromvoyageraceams02nucleusdata

	implicationsoncosmicrayinjectionandpropagationparametersfromvoyageraceams02nucleusdata
	Qiang Yuan1
刊名	中国科学物理学力学天文学英文版
	2019
卷号	062 期号:004 页码:98
ISSN号	1674-7348
英文摘要	We study the propagation and injection models of cosmic rays using the latest measurements of the boron-to-carbon ratio and fluxes of protons, helium, carbon, and oxygen nuclei by the Alpha Magnetic Spectrometer and the Advanced Composition Explorer at top of the Earth, and the Voyager spacecraft outside the heliosphere. The Advanced Composition Explorer(ACE) data during the same time interval of the AMS-02 data are extracted to minimize the complexity of the solar modulation effect. We find that the cosmic ray nucleus data favor a modified version of the diffusion-reacceleration scenario of the propagation. The diffusion coefficient is, however, required to increase moderately with decreasing rigidity at low energies, which has interesting implications on the particle and plasma interaction in the Milky Way. We further find that the low rigidity(< a few GV) injection spectra are different for different compositions. The injection spectra are softer for lighter nuclei. These results are expected to be helpful in understanding the acceleration process of cosmic rays.
语种	英语
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/31202]
专题	中国科学院紫金山天文台
作者单位	1.中国科学院紫金山天文台 2.北京大学 3.中国科学技术大学
推荐引用方式 GB/T 7714	Qiang Yuan. implicationsoncosmicrayinjectionandpropagationparametersfromvoyageraceams02nucleusdata[J]. 中国科学物理学力学天文学英文版,2019,062(004):98.
APA	Qiang Yuan.(2019).implicationsoncosmicrayinjectionandpropagationparametersfromvoyageraceams02nucleusdata.中国科学物理学力学天文学英文版,062(004),98.
MLA	Qiang Yuan."implicationsoncosmicrayinjectionandpropagationparametersfromvoyageraceams02nucleusdata".中国科学物理学力学天文学英文版 062.004(2019):98.