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MERLIN Images of Five Compact Symmetric Object Candidates at 1.6 GHz
作者姓名:Hai-YanZhang  XiangLiu  
作者单位:1 National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012 2 Department of Astronomy,Beijing Normal University,Beijing 100875 3 Urumqi Astronomical Observatory,National A
摘    要:1 INTRODUCTIONCompact Symmetric Objects (CSOs) are powerful and compact sources (overall size <1 bpc) with lobe emission on both sides of the central engine. The small size of these sourcesis almost certainly to be attributed to the youth of the sources themselves (ages < 104 yr) andnot due to a dense coallning medium (Readhead 1996). The unification scenario assumes thatCSOs evolve into compact steep spectrum (CSS) sotirces and then into Fanaroff-Riley type 11objects (Fanti 1995). …

关 键 词:无线电干扰测量法  致密对称物体  CSO  无线电连接

MERLIN Images of Five Compact Symmetric Object Candidates at 1.6 GHz
Hai-Yan Zhang,Xiang Liu,Cheng-Jin Jin and Ren-Dong Nan.MERLIN Images of Five Compact Symmetric Object Candidates at 1.6 GHz[J].Chinese Journal of Astronomy and Astrophysics,2001,1(2):129-132.
Authors:Hai-Yan Zhang  Xiang Liu  Cheng-Jin Jin and Ren-Dong Nan
Institution:[1]NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012 [2]UrumqiAstronomicalObservator,ChineseAcademyofSciences,Beijing100012
Abstract:We present results of MERLIN observations of five compact radio sources at 1.6 GHz,part of a large survey to identify compact symmetric objects (CSOs).We give for the first time MERLIN maps of two sources,1604 315 and 1751 278.The five observed sources show very compact,unresolved point-like structure,which may imply that they are good CSO candidates.
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