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The VSOP 5 GHz Active Galactic Nucleus Survey. III. Imaging results for the first 102 sources

文献类型:期刊论文

作者Scott, WK; Fomalont, EB; Horiuchi, S; Lovell, JEJ; Moellenbrock, GA; Dodson, RG; Edwards, PG; Coldwell, GV; Fodor, S; Frey, S
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2004-11-01
卷号155期号:1页码:33-72
关键词galaxies : active radio continuum : galaxies surveys
英文摘要The VLBI Space Observatory Programme (VSOP) mission is a Japanese-led project to study radio sources with sub-milliarcsec resolution using an orbiting 8 m telescope, HALCA, along with global arrays of Earth-based telescopes. Approximately 25% of the observing time is devoted to a survey of compact active galactic nuclei (AGNs) that are stronger than 1 Jy at 5 GHz-the VSOP AGN Survey. This paper, the third in the series, presents the results from the analysis of the first 102 Survey sources. We present high-resolution images and plots of visibility amplitude versus projected baseline length. In addition, model-fit parameters to the primary radio components are listed, and from these the angular size and brightness temperature for the radio cores are calculated. For those sources for which we were able to determine the source frame core brightness temperature, a significant fraction (53 out of 98) have a source frame core brightness temperature in excess of 10(12) K. The maximum source frame core brightness temperature we observed was 1.2x10(13) K. Explaining a brightness temperature this high requires an extreme amount of relativistic Doppler beaming. Since the maximum brightness temperature one is able to determine using only ground-based arrays is of the order of 10(12) K, our results confirm the necessity of using space VLBI to explore the extremely high brightness temperature regime.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]REFERENCE FRAME SOURCES ; SPACE-OBSERVATORY PROGRAM ; SPECTRUM RADIO-SOURCES ; QUASI-STELLAR OBJECTS ; VLBA OBSERVATIONS ; OPTICAL IDENTIFICATIONS ; BL LACERTAE ; ASTROMETRIC SUITABILITY ; COMPLETE SAMPLE ; EARTH ORBIT
收录类别SCI
语种英语
WOS记录号WOS:000224700400004
源URL[http://119.78.226.72/handle/331011/19364]  
专题上海天文台_星系宇宙学重点实验室
作者单位1.Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada
2.Natl Radio Astron Observ, Charlottesville, VA 22903 USA
3.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
4.Natl Astron Observ Japan, Tokyo 1818588, Japan
5.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia
6.CSIRO, Australia Telescope Natl Facil, Epping, NSW 2122, Australia
7.Natl Radio Astron Observ, Socorro, NM 87801 USA
8.Univ Tasmania, Sch Math & Phys, Hobart, Tas 7001, Australia
9.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa 2298510, Japan
10.Univ Nacl Cordoba, Astron Observ, Grp Invest Astron Teor & Expt, RA-5000 Cordoba, Argentina
推荐引用方式
GB/T 7714
Scott, WK,Fomalont, EB,Horiuchi, S,et al. The VSOP 5 GHz Active Galactic Nucleus Survey. III. Imaging results for the first 102 sources[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2004,155(1):33-72.
APA Scott, WK.,Fomalont, EB.,Horiuchi, S.,Lovell, JEJ.,Moellenbrock, GA.,...&Tingay, SJ.(2004).The VSOP 5 GHz Active Galactic Nucleus Survey. III. Imaging results for the first 102 sources.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,155(1),33-72.
MLA Scott, WK,et al."The VSOP 5 GHz Active Galactic Nucleus Survey. III. Imaging results for the first 102 sources".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 155.1(2004):33-72.

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