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题名: VLBI observation of the M81 core with the CVN in X-band and the Pseudo-Closure Analysis
作者: Kawaguchi, Noriyuki1, 2; Jiang, Wu1, 3, 4; Shen, Zhi-Qiang1, 3
刊名: PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
出版日期: 2015-12-01
卷号: 67, 期号:6
关键词: galaxies: jets ; instrumentation: interferometers ; methods: data analysis ; techniques: interferometric
DOI: 10.1093/pasj/psv083
文章类型: Article
英文摘要: The Chinese Very Long Baseline Interferometry (VLBI) Network (CVN) is now operating as part of the Chinese Lunar Project to track the lunar orbiter and to trace the motion of the lunar rover. The network works on radio astronomy observations as well. The galaxy core of M81 was observed at 8.3 GHz by three Chinese VLBI stations; the Nanshan 25-m, Sheshan 25-m, and Tianma 65-m radio telescopes. In the data analysis, we introduce a new parameter, the Pseudo-Closure Amplitude, to remove uncertainties in the sensitivity of the large dish telescope of the Tianma 65-m. The large dish is susceptible to gravitational loading and may show a large change of efficiency with a change of elevation angle. By introducing the Pseudo-Closure Amplitude we have successfully detected a jet in the core of M81 and measured the position angle.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: RADIO TELESCOPE ; NUCLEUS ; SYSTEM ; GHZ
收录类别: SCI
项目资助者: National Natural Science Foundation of China(11173046) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; Chinese Academy of Sciences(XDA04060700) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences Visiting Professorship for Foreign International Scientists(2013T2J0059)
语种: 英语
WOS记录号: WOS:000366859800012
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16086
Appears in Collections:空间目标与碎片观测研究基地_期刊论文

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作者单位: 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
3.Chinese Acad Sci, Key Lab Radio Astron, Shanghai 200030, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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