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Radio/X-ray offsets of large-scale jets caused by synchrotron time lags
Bai JM(白金明)1,2; Lee, MG1,3; Bai, JM (reprint author), Seoul Natl Univ, Sch Earth & Environm Sci, Astron Program, Seoul 151742, South Korea.
发表期刊ASTROPHYSICAL JOURNAL
2003-03-10
卷号585期号:2页码:L113-L116
DOI10.1086/374304
产权排序第2完成单位
收录类别SCI
关键词Galaxies : Active Galaxies : Jets Radiation Mechanisms : Nonthermal X-rays : Galaxies
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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
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WOS记录号WOS:000181287300010
WOS研究方向Astronomy & Astrophysics
WOS类目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
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6962
专题星系研究组
通讯作者Bai, JM (reprint author), Seoul Natl Univ, Sch Earth & Environm Sci, Astron Program, Seoul 151742, South Korea.
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
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Bai JM,Lee, MG,Bai, JM . 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,&Bai, JM .(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.
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