Radio/X-ray offsets of large-scale jets caused by synchrotron time lags

	Radio/X-ray offsets of large-scale jets caused by synchrotron time lags
	Bai JM(白金明)1,2 ; Lee, MG 1,3
刊名	ASTROPHYSICAL JOURNAL
	2003-03-10
卷号	585 期号:2 页码:L113-L116
关键词	galaxies : active galaxies : jets radiation mechanisms : nonthermal X-rays : galaxies
ISSN号	0004-637X
通讯作者	Bai, JM (reprint author), Seoul Natl Univ, Sch Earth & Environm Sci, Astron Program, Seoul 151742, South Korea.
产权排序	第二完成单位
英文摘要	In the internal shock scenario, we argue that electrons in most kiloparsec-scale (or even larger) jets can be accelerated to energies high enough to emit synchrotron X-rays, if shocks exist on these scales. These high-energy electrons emit synchrotron radiation at high frequencies and cool as they propagate downstream along the jet, emitting at progressively lower frequencies and resulting in time lags and hence radio/X-ray (and optical/ X-ray if the optical knot is detectable) offsets at bright knots, with the centroids of X-ray knots being closer to the core. Taking into account the strong effects of jet expansion, the behavior of radio/X-ray and optical/ X-ray offsets at bright knots in M87, Centaurus A, 3C 66B, 3C 31, 3C 273, and PKS 1127-145 is consistent with that of synchrotron time lags due to radiative losses. This suggests that the large-scale X-ray and optical jets in these sources are due to synchrotron emission.
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]	ACTIVE GALACTIC NUCLEI ; PARTICLE-ACCELERATION ; ELECTRON ACCELERATION ; CHANDRA OBSERVATIONS ; M87 JET ; BLAZARS ; PKS-2155-304 ; EMISSION ; PKS-0637-752 ; VARIABILITY
收录类别	SCI
原文出处	http://iopscience.iop.org/1538-4357/585/2/L113/
语种	英语
WOS记录号	WOS:000181287300010
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6962]
专题	云南天文台_星系研究组
作者单位	1.Astronomy Program, School of Earth and Environmental Sciences, Seoul National University, Seoul 151-742, Korea 2.Yunnan Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011, China 3.Carnegie Institution of Washington, Department of Terrestrial Magnetism, 5241 Broad Branch Road, NW, Washington, DC 20015-1305
推荐引用方式 GB/T 7714	Bai JM,Lee, MG. Radio/X-ray offsets of large-scale jets caused by synchrotron time lags[J]. ASTROPHYSICAL JOURNAL,2003,585(2):L113-L116.
APA	Bai JM,&Lee, MG.(2003).Radio/X-ray offsets of large-scale jets caused by synchrotron time lags.ASTROPHYSICAL JOURNAL,585(2),L113-L116.
MLA	Bai JM,et al."Radio/X-ray offsets of large-scale jets caused by synchrotron time lags".ASTROPHYSICAL JOURNAL 585.2(2003):L113-L116.