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Very Long Baseline Interferometry (VLBI) technique, with its high-resolution imaging capability, is proved to be the most powerful tool for probing the region of a few Schwarzschild radii of Sgr A* . This paper updates the progress in the VLBI observations of Sgr A* , with the emphasis on the importance of the millimeter and sub-millimeter VLBI observations in the detection of the intrinsic structure of Sgr A* and in our ongoing effort to search for the structural variability. There is no doubt that Sgr A* would be the most important target for the future sub-millimeter VLBI experiment to test the General Relativity., authors=SHEN Zhi-qiang, authorsList=SHEN Zhi-qiang, authorCompany=Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=0HaGjrbE+6vNgVFtQB3Jng==, pdfFileSize=374327, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242118742495264981, articleId=1242118740138066118, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=对银河系中心超大质量黑洞候选体Sgr A* 的VLBI观测研究, columnId=1242118669652791516, journalTitle=科技导报, columnName=物理学研究专题, runingTitle=null, highlight=null, articleAbstract=位于银河系中央的极其致密的非热射电源SagittariusA* (SgrA* ),被公认为是最佳的超大质量黑洞候选体,其质量约为400万个太阳质量。甚长基线干涉测量(VLBI)技术以其独有的高空间分辨率为我们提供了唯一可以探讨SgrA* 位于几个史瓦西(Schwarzschild)半径区域内天体物理性质的手段。介绍了对SgrA* 的VLBI研究现状和最新进展,着重论述了毫米波和亚毫米波VLBI观测对研究SgrA* 的辐射区域的真实形状和大小,以及探索其结构随时间变化的重要性。SgrA* 无疑是检验广义相对论效应的亚毫米波VLBI实验的最佳目标。, authors=沈志强, authorsList=沈志强, authorCompany=中国科学院上海天文台,上海200030, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=n5Q9gebdJUMyPBHSmG0NrQ==, pdfFileSize=374327, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1242118742092616293, tenantId=1146029695717560320, journalId=1146031591421210625, 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科技导报
|物理学研究专题
2004
, 22
(0411) :
8
-11
对银河系中心超大质量黑洞候选体Sgr A
* 的VLBI观测研究
全屏
沈志强
作者信息
VLBI OBSERVATIONS OF SGR A* : A SUPERMASSIVE BLACK HOLE CANDIDATE AT THE GALACTIC CENTRE
SHEN Zhi-qiang
Affiliations
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
出版时间: 2004-11-10
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位于银河系中央的极其致密的非热射电源SagittariusA* (SgrA* ),被公认为是最佳的超大质量黑洞候选体,其质量约为400万个太阳质量。甚长基线干涉测量(VLBI)技术以其独有的高空间分辨率为我们提供了唯一可以探讨SgrA* 位于几个史瓦西(Schwarzschild)半径区域内天体物理性质的手段。介绍了对SgrA* 的VLBI研究现状和最新进展,着重论述了毫米波和亚毫米波VLBI观测对研究SgrA* 的辐射区域的真实形状和大小,以及探索其结构随时间变化的重要性。SgrA* 无疑是检验广义相对论效应的亚毫米波VLBI实验的最佳目标。
甚长基线干涉测量(VLBI)
/
银河系中心
/
超大质量黑洞
/
毫米波
There is compelling evidence that the extremely compact non-thermal radio source at the center of our Milky Way Galaxy, Sagittarius A* ( Sgr A* ), is a best known supermassive black hole candidate with a dark mass of 4 million solar masses. Very Long Baseline Interferometry (VLBI) technique, with its high-resolution imaging capability, is proved to be the most powerful tool for probing the region of a few Schwarzschild radii of Sgr A* . This paper updates the progress in the VLBI observations of Sgr A* , with the emphasis on the importance of the millimeter and sub-millimeter VLBI observations in the detection of the intrinsic structure of Sgr A* and in our ongoing effort to search for the structural variability. There is no doubt that Sgr A* would be the most important target for the future sub-millimeter VLBI experiment to test the General Relativity.
Very Long Baseline Interferometry (VLBI)
/
Galactic Centre
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supermassive black hole
/
millimeter wave
沈志强.
对银河系中心超大质量黑洞候选体Sgr A* 的VLBI观测研究.
科技导报,
2004
, 22
(0411)
: 8
-11
.
SHEN Zhi-qiang.
VLBI OBSERVATIONS OF SGR A* : A SUPERMASSIVE BLACK HOLE CANDIDATE AT THE GALACTIC CENTRE[J].
Science & Technology Review ,
2004
, 22
(0411)
: 8
-11
.
2004年第22卷第0411期
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接收时间：2004-08-19
首发时间：2004-11-10
出版时间：2004-11-10
收稿日期：2004-08-19
修回日期：1900-01-01
https://castjournals.cast.org.cn/joweb/kjdb/CN/1242118740138066118
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2种不同金属材料的力学参数
科 属数 种数 占总种数比例 属 种数 占总种数比例 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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