Greenland telescope project: Direct confirmation of black hole with sub-millimeter VLBI

M. Inoue*, J. C. Algaba-Marcos, K. Asada, R. Blundell, W. Brisken, R. Burgos, C. C. Chang, M. T. Chen, S. S. Doeleman, V. Fish, P. Grimes, J. Han, H. Hirashita, P. T.P. Ho, S. N. Hsieh, T. Huang, H. Jiang, E. Keto, P. M. Koch, D. Y. KuboC. Y. Kuo, B. Liu, P. Martin-Cocher, S. Matsushita, Z. Meyer-Zhao, M. Nakamura, P. Napier, H. Nishioka, G. Nystrom, S. Paine, N. Patel, N. Pradel, H. Y. Pu, P. A. Raffin, H. Y. Shen, W. Snow, R. Srinivasan, T. S. Wei

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

39 引文 斯高帕斯(Scopus)

摘要

A 12 m diameter radio telescope will be deployed to the Summit Station in Greenland to provide direct confirmation of a Super Massive Black Hole (SMBH) by observing its shadow image in the active galaxy M87. The telescope (Greenland Telescope: GLT) is to become one of the Very Long Baseline Interferometry (VLBI) stations at sub-millimeter (submm) regime, providing the longest baseline >9000 km to achieve an exceptional angular resolution of 20 μas at 350 GHz, which will enable us to resolve the shadow size of ~40 μas. The triangle with the longest baselines formed by the GLT, the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, and the Submillimeter Array (SMA) in Hawaii will play a key role for the M87 observations. We have been working on the image simulations based on realistic conditions for a better understanding of the possible observed images. In parallel, retrofitting of the telescope and the site developments are in progress. Based on 3 years of opacity monitoring at 225 GHz, our measurements indicate that the site is excellent for submm observations, comparable to the ALMA site. The GLT is also expected to make single-dish observations up to 1.5 THz. Key Points A submm telescope is coordinated to establish it at the Summit of Greenland Black Hole shadow imaging is the primary target for the submm VLBI The Summit shows low opacity at 225 GHz and is expected excellent up to THz regime

原文英語
頁(從 - 到)564-571
頁數8
期刊Radio Science
49
發行號7
DOIs
出版狀態已發佈 - 2014 7月
對外發佈

ASJC Scopus subject areas

  • 凝聚態物理學
  • 一般地球與行星科學
  • 電氣與電子工程

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