Knot in centaurus A: A stochastic magnetic field for diffusive synchrotron radiation?

	Knot in centaurus A: A stochastic magnetic field for diffusive synchrotron radiation?
	Mao JR(毛基荣); Wang JC(王建成)
刊名	ASTROPHYSICAL JOURNAL
	2007-11-01
卷号	669 期号:1 页码:L13-L16
关键词	galaxies : active galaxies : individual ( Centaurus A) galaxies : jets radiation mechanisms : nonthermal turbulence
ISSN号	0004-637X
通讯作者	Mao, J (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming, Yunnan Province, Peoples R China.
产权排序	第一完成单位
英文摘要	The emission of relativistic electrons moving in the random and small-scale magnetic field is presented by diffusive synchrotron radiation (DSR). In this Letter, we revisit the perturbative treatment of DSR. We propose that a random and small-scale magnetic field might be generated by the turbulence. As an example, multiband radiation of the knot in Cen A comes from the electrons with energy gamma(e) similar to 10(3 -) 10(4) in the magnetic field of 10(-3) G. The multiband spectrum of DSR is well determined by the feature of a stochastic magnetic field. These results put strong constraints on the models of particle acceleration.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	FULLY-DEVELOPED TURBULENCE ; COSMIC-RAY ACCELERATION ; WEIBEL INSTABILITY ; PARTICLE-ACCELERATION ; RELATIVISTIC SHOCKS ; MAGNETOHYDRODYNAMIC TURBULENCE ; COLLISIONLESS SHOCKS ; PLASMA SHOCKS ; BURST SOURCES ; GENERATION
收录类别	SCI
原文出处	http://iopscience.iop.org/1538-4357/669/1/L13/
语种	英语
WOS记录号	WOS:000250480700004
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4954]
专题	云南天文台_高能天体物理研究组
作者单位	Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Kunming, Yunnan Province, China
推荐引用方式 GB/T 7714	Mao JR,Wang JC. Knot in centaurus A: A stochastic magnetic field for diffusive synchrotron radiation?[J]. ASTROPHYSICAL JOURNAL,2007,669(1):L13-L16.
APA	Mao JR,&Wang JC.(2007).Knot in centaurus A: A stochastic magnetic field for diffusive synchrotron radiation?.ASTROPHYSICAL JOURNAL,669(1),L13-L16.
MLA	Mao JR,et al."Knot in centaurus A: A stochastic magnetic field for diffusive synchrotron radiation?".ASTROPHYSICAL JOURNAL 669.1(2007):L13-L16.