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题名: Very long baseline interferometry detection of the Galactic black hole binary candidate MAXI J1836-194
作者: Yang, Jun1; Xu, Yonghua2, 3; Li, Zhixuan2, 3; Paragi, Zsolt1; Campbell, Robert M.1; Gurvits, Leonid I.1, 4; Shen, Zhiqiang5, 6; Hong, Xiaoyu5, 6; Xia, Bo5, 6; Shu, Fengchun5, 6
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期: 2012-10-01
卷号: 426, 期号:1, 页码:L66-L70
关键词: stars: individual: MAXI J1836-194 ; radio continuum: stars ; X-rays: binaries
DOI: 10.1111/j.1745-3933.2012.01327.x
文章类型: Article
英文摘要: The X-ray transient MAXI J1836-194 is a newly identified Galactic black hole binary candidate. As most X-ray transients, it was discovered at the beginning of an X-ray outburst. After the initial canonical X-ray hard state, the outburst evolved into a hard intermediate state and then went back to the hard state. The existing RATAN-600 radio monitoring observations revealed that it was variable on a time-scale of days and had a flat or inverted spectrum, consistent with optically thick synchrotron emission, possibly from a self-absorbed jet in the vicinity of the central compact object. We observed the transient in the hard state near the end of the X-ray outburst with the European very long baseline interferometry (VLBI) Network (EVN) at 5 GHz and the Chinese VLBI Network (CVN) at 2.3 and 8.3 GHz. The 8.3-GHz observations were carried out at a recording rate of 2048 Mbps using the newly developed Chinese VLBI data acquisition system, twice higher than the recording rate used in the other observations. We successfully detected the low-declination source with a high confidence level in both observations. The source was unresolved (=0.5 mas), which is in agreement with an au-scale compact jet.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: GRS 1915+105 ; JETS ; OUTBURST ; STATE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000309455800014
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15554
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands
2.NAOC, Yunnan Astron Observ, Kunming 650011, Peoples R China
3.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Beijing, Peoples R China
4.Delft Univ Technol, Dept Astrodynam & Space Miss, NL-2629 HS Delft, Netherlands
5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
6.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China
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