Excesses of cosmic ray spectra from a single nearby source

doi:10.1103/PhysRevD.96.023006

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Excesses of cosmic ray spectra from a single nearby source
	Wang, BB; Bi, XJ; Lin SJ(林苏杰); Bi XJ(毕效军); Wang BB(王兵兵); Yin PF(殷鹏飞); Liu, W; Lin, SJ; Liu W(刘伟); Yin, PF
刊名	PHYSICAL REVIEW D
	2017
卷号	96 期号:2 页码:23006
ISSN号	2470-0010
DOI	10.1103/PhysRevD.96.023006
文献子类	Article
英文摘要	Growing evidence reveals universal hardening on various cosmic ray spectra, e.g., proton, positron, as well as antiproton fractions. Such universality may indicate they have a common origin. In this paper, we argue that these widespread excesses can be accounted for by a nearby supernova remnant surrounded by a giant molecular cloud. Secondary cosmic rays (p, e(+)) are produced through the collisions between the primary cosmic-ray nuclei from this supernova remnant and the molecular gas. Different from the background, which is produced by the ensemble of a large number of sources in the Milky Way, the local injected spectrum can be harder. The time-dependent transport of particles would make the propagated spectrum even harder. Under this scenario, the anomalies of both primary (p, e(-)) and secondary (e(+),(p) over bar /p) cosmic rays can be properly interpreted. We further show that the TeV to sub-PeV anisotropy of the proton is consistent with the observations if the local source is relatively young and lying at the anti-Galactic center direction.
电子版国际标准刊号	2470-0029
WOS关键词	DARK-MATTER ; SUPERNOVA-REMNANTS ; HELIUM SPECTRA ; MYRIAD MODEL ; ORIGIN ; ELECTRONS ; ENERGIES ; PROTON ; ACCELERATION ; PROPAGATION
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000406307500001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284393]
专题	高能物理研究所_粒子天体物理中心高能物理研究所_核技术应用研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, BB,Bi, XJ,Lin SJ,et al. Excesses of cosmic ray spectra from a single nearby source[J]. PHYSICAL REVIEW D,2017,96(2):23006.
APA	Wang, BB.,Bi, XJ.,林苏杰.,毕效军.,王兵兵.,...&Yin, PF.(2017).Excesses of cosmic ray spectra from a single nearby source.PHYSICAL REVIEW D,96(2),23006.
MLA	Wang, BB,et al."Excesses of cosmic ray spectra from a single nearby source".PHYSICAL REVIEW D 96.2(2017):23006.