Stochastic acceleration in the western hot spot of Pictor A

doi:10.1086/528372

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	Stochastic acceleration in the western hot spot of Pictor A
	Fan ZH(范忠辉); Wang JM(王建民); Fan, ZH; Liu, SM; Wang, JM; Fryer, CL; Li, H
	2008
发表期刊	ASTROPHYSICAL JOURNAL LETTERS
卷号	673 期号:2 页码:L139-L142
通讯作者	[Fan, Zhong-Hui ; Wang, Jian-Min] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Liu, Siming ; Fryer, Christopher L. ; Li, Hui] Los Alamos Natl Lab, Los Alamos, NM 87545 USA ; [Fryer, Christopher L.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
文章类型	Article
摘要	Chandra's high-resolution observations of radio galaxies require a revisit of the relevant electron acceleration processes. Although the diffusive shock particle acceleration model may explain spectra of spatially unresolved sources, it encounters difficulties in explaining the structure and spectral properties of recently discovered Chandra X-ray features in several low-power radio sources. We argue that these observations strongly suggest stochastic electron acceleration by magnetized turbulence, and show that the simplest stochastic particle acceleration model with energy-independent acceleration and escape timescales can overcome most of these difficulties. We use the bright core of the western hot spot of Pictor A as an example to demonstrate the model characteristics, which may be tested with high-energy observations.
关键词	acceleration of particles galaxies : individual (Pictor A) galaxies : jets radiation mechanisms : nonthermal
学科领域	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI	10.1086/528372
URL	查看原文
语种	英语
研究领域[WOS]	Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000255233000009
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/240248
专题	粒子天体物理中心
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	Fan ZH,Wang JM,Fan, ZH,et al. Stochastic acceleration in the western hot spot of Pictor A[J]. ASTROPHYSICAL JOURNAL LETTERS,2008,673(2):L139-L142.
APA	范忠辉.,王建民.,Fan, ZH.,Liu, SM.,Wang, JM.,...&Li, H.(2008).Stochastic acceleration in the western hot spot of Pictor A.ASTROPHYSICAL JOURNAL LETTERS,673(2),L139-L142.
MLA	范忠辉,et al."Stochastic acceleration in the western hot spot of Pictor A".ASTROPHYSICAL JOURNAL LETTERS 673.2(2008):L139-L142.

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