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. Kubo; C. 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

doi:10.1002/2014RS005450

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

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

Original language	English
Pages (from-to)	564-571
Number of pages	8
Journal	Radio Science
Volume	49
Issue number	7
DOIs	https://doi.org/10.1002/2014RS005450
Publication status	Published - 2014 Jul
Externally published	Yes

Keywords

submm VLBI
submm and THz observing site
submm telescope
supermassive Black Hole

ASJC Scopus subject areas

Condensed Matter Physics
General Earth and Planetary Sciences
Electrical and Electronic Engineering

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10.1002/2014RS005450

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Inoue, M., Algaba-Marcos, J. C., Asada, K., Blundell, R., Brisken, W., Burgos, R., Chang, C. C., Chen, M. T., Doeleman, S. S., Fish, V., Grimes, P., Han, J., Hirashita, H., Ho, P. T. P., Hsieh, S. N., Huang, T., Jiang, H., Keto, E., Koch, P. M., ... Wei, T. S. (2014). Greenland telescope project: Direct confirmation of black hole with sub-millimeter VLBI. Radio Science, 49(7), 564-571. https://doi.org/10.1002/2014RS005450

Inoue, M, Algaba-Marcos, JC, Asada, K, Blundell, R, Brisken, W, Burgos, R, Chang, CC, Chen, MT, Doeleman, SS, Fish, V, Grimes, P, Han, J, Hirashita, H, Ho, PTP, Hsieh, SN, Huang, T, Jiang, H, Keto, E, Koch, PM, Kubo, DY, Kuo, CY, Liu, B, Martin-Cocher, P, Matsushita, S, Meyer-Zhao, Z, Nakamura, M, Napier, P, Nishioka, H, Nystrom, G, Paine, S, Patel, N, Pradel, N, Pu, HY, Raffin, PA, Shen, HY, Snow, W, Srinivasan, R & Wei, TS 2014, 'Greenland telescope project: Direct confirmation of black hole with sub-millimeter VLBI', Radio Science, vol. 49, no. 7, pp. 564-571. https://doi.org/10.1002/2014RS005450

@article{b01d1927298d4b188db2b1fcfaa94794,

title = "Greenland telescope project: Direct confirmation of black hole with sub-millimeter VLBI",

abstract = "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",

keywords = "submm VLBI, submm and THz observing site, submm telescope, supermassive Black Hole",

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

year = "2014",

month = jul,

doi = "10.1002/2014RS005450",

language = "English",

volume = "49",

pages = "564--571",

journal = "Radio Science",

issn = "0048-6604",

publisher = "American Geophysical Union",

number = "7",

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T2 - Direct confirmation of black hole with sub-millimeter VLBI

AU - Inoue, M.

AU - Algaba-Marcos, J. C.

AU - Asada, K.

AU - Blundell, R.

AU - Brisken, W.

AU - Burgos, R.

AU - Chang, C. C.

AU - Chen, M. T.

AU - Doeleman, S. S.

AU - Fish, V.

AU - Grimes, P.

AU - Han, J.

AU - Hirashita, H.

AU - Ho, P. T.P.

AU - Hsieh, S. N.

AU - Huang, T.

AU - Jiang, H.

AU - Keto, E.

AU - Koch, P. M.

AU - Kubo, D. Y.

AU - Kuo, C. Y.

AU - Liu, B.

AU - Martin-Cocher, P.

AU - Matsushita, S.

AU - Meyer-Zhao, Z.

AU - Nakamura, M.

AU - Napier, P.

AU - Nishioka, H.

AU - Nystrom, G.

AU - Paine, S.

AU - Patel, N.

AU - Pradel, N.

AU - Pu, H. Y.

AU - Raffin, P. A.

AU - Shen, H. Y.

AU - Snow, W.

AU - Srinivasan, R.

AU - Wei, T. S.

PY - 2014/7

Y1 - 2014/7

N2 - 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

AB - 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

KW - submm VLBI

KW - submm and THz observing site

KW - submm telescope

KW - supermassive Black Hole

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

Abstract

Keywords

ASJC Scopus subject areas

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