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1. First Very Long Baseline Interferometry Detections at 870{\mu}m

Author: Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Sánchez, Héctor Raúl Olivares, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Salas, León David Sosapanta, Souccar, Kamal, Srinivasan, Ranjani, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, and Zhao, Shan-Shan
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The first very long baseline interferometry (VLBI) detections at 870$\mu$m wavelength (345$\,$GHz frequency) are reported, achieving the highest diffraction-limited angular resolution yet obtained from the surface of the Earth, and the highest-frequency example of the VLBI technique to date. These include strong detections for multiple sources observed on inter-continental baselines between telescopes in Chile, Hawaii, and Spain, obtained during observations in October 2018. The longest-baseline detections approach 11$\,$G$\lambda$ corresponding to an angular resolution, or fringe spacing, of 19$\mu$as. The Allan deviation of the visibility phase at 870$\mu$m is comparable to that at 1.3$\,$mm on the relevant integration time scales between 2 and 100$\,$s. The detections confirm that the sensitivity and signal chain stability of stations in the Event Horizon Telescope (EHT) array are suitable for VLBI observations at 870$\mu$m. Operation at this short wavelength, combined with anticipated enhancements of the EHT, will lead to a unique high angular resolution instrument for black hole studies, capable of resolving the event horizons of supermassive black holes in both space and time., Comment: Corresponding author: S. Doeleman
Published: 2024
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2. The Black Hole Explorer: Instrument System Overview

Author: Marrone, Daniel P., Houston, Janice, Akiyama, Kazunori, Bilyeu, Bryan, Boroson, Don, Grimes, Paul, Haworth, Kari, Lehmensiek, Robert, Peretz, Eliad, Rana, Hannah, Sinclair, Laura C., Kumara, Sridharan Tirupati, Srinivasan, Ranjani, Tong, Edward, Wang, Jade, Weintroub, Jonathan, and Johnson, Michael D.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Black Hole Explorer (BHEX) is a space very-long-baseline interferometry (VLBI) mission concept that is currently under development. BHEX will study supermassive black holes at unprecedented resolution, isolating the signature of the "photon ring" - light that has orbited the black hole before escaping - to probe physics at the edge of the observable universe. It will also measure black hole spins, study the energy extraction and acceleration mechanisms for black hole jets, and characterize the black hole mass distribution. BHEX achieves high angular resolution by joining with ground-based millimeter-wavelength VLBI arrays, extending the size, and therefore improving the angular resolution of the earthbound telescopes. Here we discuss the science instrument concept for BHEX. The science instrument for BHEX is a dual-band, coherent receiver system for 80-320 GHz, coupled to a 3.5-meter antenna. BHEX receiver front end will observe simultaneously with dual polarizations in two bands, one sampling 80-106 GHz and one sampling 240-320 GHz. An ultra-stable quartz oscillator provides the master frequency reference and ensures coherence for tens of seconds. To achieve the required sensitivity, the front end will instantaneously receive 32 GHz of frequency bandwidth, which will be digitized to 64 Gbits/sec of incompressible raw data. These data will be buffered and transmitted to the ground via laser data link, for correlation with data recorded simultaneously at radio telescopes on the ground. We describe the challenges associated with the instrument concept and the solutions that have been incorporated into the baseline design., Comment: SPIE Astronomical Telescopes + Instrumentation, 2024
Published: 2024

3. The Black Hole Explorer: Back End Electronics

Author: Srinivasan, Ranjani, Weintroub, Jonathan, Raffanti, Rick, Bilyeu, Bryan, Gauron, Thomas, Test, John, Richards, Elliot, Fernandez, Manuel, Freeman, Mark, Cheimets, Peter, Gendelman, Mauricio, Haworth, Kari, Houston, Janice, Johnson, Michael D., Mamani, Emilia, Marrone, Daniel, Pola, Ariel L., and Wang, Jade
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: This paper describes specification and early design of back end signal processing subsystems for the Black Hole Explorer (BHEX) Very Long Baseline Interferometry (VLBI) space telescope. The "back end" consists of two subsystems. First, the block downconverter (BDC) is a heterodyne system that performs a frequency translation of the analog signal from IF to baseband and amplifies and filters it for digitization. Second, the digital back end (DBE) samples the analog signal with an analog-to-digital converters (ADC) and digitally processes the data stream formatting them to the VLBI "VDIF" standard and converting to Ethernet packets for 100 gigabit-per-second (Gb/s) Ethernet transport to the optical downlink system. Both the BDC and the DBE for BHEX support eight channels of 4.096 GHz bandwidth each, for a total processed bandwidth of 32.768 GHz. The BHEX back end benefits from mature terrestrial back end heritage, described in some detail. The BHEX back end itself is in the early stages of design, with requirements, interface specifications, and component trade studies well advanced. The aim is to build a prototype using terrestrial grade parts which are available in functionally identical space grade equivalents, and to use this prototype to advance the back end Technology Readiness Level (TRL) preparing for a Small Explorer (SMEX) proposal in 2025., Comment: 13 pages including abstract and references, 6 figures
Published: 2024

4. The Black Hole Explorer: Motivation and Vision

Author: Johnson, Michael D., Akiyama, Kazunori, Baturin, Rebecca, Bilyeu, Bryan, Blackburn, Lindy, Boroson, Don, Cardenas-Avendano, Alejandro, Chael, Andrew, Chan, Chi-kwan, Chang, Dominic, Cheimets, Peter, Chou, Cathy, Doeleman, Sheperd S., Farah, Joseph, Galison, Peter, Gamble, Ronald, Gammie, Charles F., Gelles, Zachary, Gomez, Jose L., Gralla, Samuel E., Grimes, Paul, Gurvits, Leonid I., Hadar, Shahar, Haworth, Kari, Hada, Kazuhiro, Hecht, Michael H., Honma, Mareki, Houston, Janice, Hudson, Ben, Issaoun, Sara, Jia, He, Jorstad, Svetlana, Kauffmann, Jens, Kovalev, Yuri Y., Kurczynski, Peter, Lafon, Robert, Lupsasca, Alexandru, Lehmensiek, Robert, Ma, Chung-Pei, Marrone, Daniel P., Marscher, Alan P., Melnick, Gary J., Narayan, Ramesh, Niinuma, Kotaro, Noble, Scott C., Palmer, Eric J., Palumbo, Daniel C. M., Paritsky, Lenny, Peretz, Eliad, Pesce, Dominic, Plavin, Alexander, Quataert, Eliot, Rana, Hannah, Ricarte, Angelo, Roelofs, Freek, Shtyrkova, Katia, Sinclair, Laura C., Small, Jeffrey, Kumara, Sridharan Tirupati, Srinivasan, Ranjani, Strominger, Andrew, Tiede, Paul, Tong, Edward, Wang, Jade, Weintroub, Jonathan, Wielgus, Maciek, Wong, George, and Zhang, Xinyue Alice
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology
Abstract: We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow "photon ring" that is predicted to exist in images of black holes, produced from light that has orbited the black hole before escaping. This discovery will expose universal features of a black hole's spacetime that are distinct from the complex astrophysics of the emitting plasma, allowing the first direct measurements of a supermassive black hole's spin. In addition to studying the properties of the nearby supermassive black holes M87* and Sgr A*, BHEX will measure the properties of dozens of additional supermassive black holes, providing crucial insights into the processes that drive their creation and growth. BHEX will also connect these supermassive black holes to their relativistic jets, elucidating the power source for the brightest and most efficient engines in the universe. BHEX will address fundamental open questions in the physics and astrophysics of black holes that cannot be answered without submillimeter space VLBI. The mission is enabled by recent technological breakthroughs, including the development of ultra-high-speed downlink using laser communications, and it leverages billions of dollars of existing ground infrastructure. We present the motivation for BHEX, its science goals and associated requirements, and the pathway to launch within the next decade., Comment: Proceedings for SPIE Astronomical Telescopes and Instrumentation
Published: 2024
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5. High Data Rate Laser Communications for the Black Hole Explorer

Author: Wang, Jade, Bilyeu, Bryan, Boroson, Don, Caplan, Dave, Riesing, Kat, Robinson, Bryan, Schieler, Curt, Johnson, Michael D., Blackburn, Lindy, Haworth, Kari, Houston, Janice, Issaoun, Sara, Palumbo, Daniel, Richards, Elliot, Srinivasan, Ranjani, Weintroub, Jonathan, and Marrone, Dan
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Black Hole Explorer (BHEX) is a mission concept that can dramatically improve state-of-the-art astronomical very long baseline interferometry (VLBI) imaging resolution by extending baseline distances to space. To support these scientific goals, a high data rate downlink is required from space to ground. Laser communications is a promising option for realizing these high data rate, long-distance space-to-ground downlinks with smaller space/ground apertures. Here, we present a scalable laser communications downlink design and current lasercom mission results., Comment: Submitted to SPIE Astronomical Telescopes + Instrumentation, 2024
Published: 2024

6. The Greenland Telescope: Construction, Commissioning, and Operations in Pituffik

Author: Chen, Ming-Tang, Asada, Keiichi, Matsushita, Satoki, Raffin, Philippe, Inoue, Makoto, Ho, Paul T. P., Han, Chih-Chiang, Kubo, Derek, Norton, Timothy, Patel, Nimesh A., Nystrom, George, Huang, Chih-Wei L., Martin-Cocher, Pierre, Koay, Jun Yi, Romero-Cañizales, Cristina, Liu, Ching-Tang, Huang, Teddy, Liu, Kuan-Yu, Wei, Tashun, Chang, Shu-Hao, Chilson, Ryan, Oshiro, Peter, Jiang, Homin, Li, Chao-Te, Bower, Geoffrey, Shaw, Paul, Nishioka, Hiroaki, Koch, Patrick M., Chen, Chung-Cheng, Srinivasan, Ranjani, Rao, Ramprasad, Snow, William, Jinchi, Hao, Han, Kuo-Chang, Chang, Song-Chu, Lu, Li-Ming, Ogawa, Hideo, Kimura, Kimihiro, Hasegawa, Yutaka, Pu, Hung-Yi, Koyama, Shoko, Nakamura, Masanori, Bintley, Daniel, Walther, Craig, Friberg, Per, Dempsey, Jessica, Sriharan, T. K., Srikanth, Sivasankaran, Doeleman, Sheperd S., Brissenden, Roger, Marcos, Juan-Carlos Algaba, Jeter, Britt, Kuo, Cheng-Yu, and Park, Jongho
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: In 2018, the Greenland Telescope (GLT) started scientific observation in Greenland. Since then, we have completed several significant improvements and added new capabilities to the telescope system. This paper presents a full review of the GLT system, a summary of our observation activities since 2018, the lessons learned from the operations in the Arctic regions, and the prospect of the telescope., Comment: 26 pages, 11 figures, and 8 tables. This is the version of the article before publication editing, as submitted by an author to Publications of the Astronomical Society of the Pacific. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record will be added when it becomes available
Published: 2023

7. Reference Array and Design Consideration for the next-generation Event Horizon Telescope

Author: Doeleman, Sheperd S., Barrett, John, Blackburn, Lindy, Bouman, Katherine, Broderick, Avery E., Chaves, Ryan, Fish, Vincent L., Fitzpatrick, Garret, Fuentes, Antonio, Freeman, Mark, Gómez, José L., Haworth, Kari, Houston, Janice, Issaoun, Sara, Johnson, Michael D., Kettenis, Mark, Loinard, Laurent, Nagar, Neil, Narayanan, Gopal, Oppenheimer, Aaron, Palumbo, Daniel C. M., Patel, Nimesh, Pesce, Dominic W., Raymond, Alexander W., Roelofs, Freek, Srinivasan, Ranjani, Tiede, Paul, Weintroub, Jonathan, and Wielgus, Maciek
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (ngEHT). This program - the next-generation Event Horizon Telescope (ngEHT) - will form a networked global array of radio dishes capable of making high-fidelity real-time movies of supermassive black holes (SMBH) and their emanating jets. This builds upon the EHT principally by deploying additional modest-diameter dishes to optimized geographic locations to enhance the current global mm/submm wavelength Very Long Baseline Interferometric (VLBI) array, which has, to date, utilized mostly pre-existing radio telescopes. The ngEHT program further focuses on observing at three frequencies simultaneously for increased sensitivity and Fourier spatial frequency coverage. Here, the concept, science goals, design considerations, station siting and instrument prototyping are discussed, and a preliminary reference array to be implemented in phases is described., Comment: Submitted to the journal Galaxies
Published: 2023
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8. A ring-like accretion structure in M87 connecting its black hole and jet

Author: Lu, Ru-Sen, Asada, Keiichi, Krichbaum, Thomas P., Park, Jongho, Tazaki, Fumie, Pu, Hung-Yi, Nakamura, Masanori, Lobanov, Andrei, Hada, Kazuhiro, Akiyama, Kazunori, Kim, Jae-Young, Marti-Vidal, Ivan, Gómez, José L., Kawashima, Tomohisa, Yuan, Feng, Ros, Eduardo, Alef, Walter, Britzen, Silke, Bremer, Michael, Broderick, Avery E., Doi, Akihiro, Giovannini, Gabriele, Giroletti, Marcello, Ho, Paul T. P., Honma, Mareki, Hughes, David H., Inoue, Makoto, Jiang, Wu, Kino, Motoki, Koyama, Shoko, Lindqvist, Michael, Liu, Jun, Marscher, Alan P., Matsushita, Satoki, Nagai, Hiroshi, Rottmann, Helge, Savolainen, Tuomas, Schuster, Karl-Friedrich, Shen, Zhi-Qiang, de Vicente, Pablo, Walker, R. Craig, Yang, Hai, Zensus, J. Anton, Algaba, Juan Carlos, Allardi, Alexander, Bach, Uwe, Berthold, Ryan, Bintley, Dan, Byun, Do-Young, Casadio, Carolina, Chang, Shu-Hao, Chang, Chih-Cheng, Chang, Song-Chu, Chen, Chung-Chen, Chen, Ming-Tang, Chilson, Ryan, Chuter, Tim C., Conway, John, Crew, Geoffrey B., Dempsey, Jessica T., Dornbusch, Sven, Faber, Aaron, Friberg, Per, García, Javier González, Garrido, Miguel Gómez, Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Herrero-Illana, Ruben, Huang, Yau-De, Huang, Chih-Wei L., Impellizzeri, Violette, Jiang, Homin, Jinchi, Hao, Jung, Taehyun, Kallunki, Juha, Kirves, Petri, Kimura, Kimihiro, Koay, Jun Yi, Koch, Patrick M., Kramer, Carsten, Kraus, Alex, Kubo, Derek, Kuo, Cheng-Yu, Li, Chao-Te, Lin, Lupin Chun-Che, Liu, Ching-Tang, Liu, Kuan-Yu, Lo, Wen-Ping, Lu, Li-Ming, MacDonald, Nicholas, Martin-Cocher, Pierre, Messias, Hugo, Meyer-Zhao, Zheng, Minter, Anthony, Nair, Dhanya G., Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Patel, Nimesh A, Pen, Ue-Li, Pidopryhora, Yurii, Pradel, Nicolas, Raffin, Philippe A., Rao, Ramprasad, Ruiz, Ignacio, Sanchez, Salvador, Shaw, Paul, Snow, William, Sridharan, T. K., Srinivasan, Ranjani, Tercero, Belén, Torne, Pablo, Traianou, Efthalia, Wagner, Jan, Walther, Craig, Wei, Ta-Shun, Yang, Jun, and Yu, Chen-Yu
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies, General Relativity and Quantum Cosmology
Abstract: The nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation^{1,2}. Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3 mm, revealed a ring-like structure, which was interpreted as gravitationally lensed emission around a central black hole^3. Here we report images of M87 obtained in 2018, at a wavelength of 3.5 mm, showing that the compact radio core is spatially resolved. High-resolution imaging shows a ring-like structure of 8.4_{-1.1}^{+0.5} Schwarzschild radii in diameter, approximately 50% larger than that seen at 1.3 mm. The outer edge at 3.5 mm is also larger than that at 1.3 mm. This larger and thicker ring indicates a substantial contribution from the accretion flow with absorption effects in addition to the gravitationally lensed ring-like emission. The images show that the edge-brightened jet connects to the accretion flow of the black hole. Close to the black hole, the emission profile of the jet-launching region is wider than the expected profile of a black-hole-driven jet, suggesting the possible presence of a wind associated with the accretion flow., Comment: 50 pages, 18 figures, 3 tables, author's version of the paper published in Nature
Published: 2023
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9. Graphical Models of Entangled Missingness

Author: Srinivasan, Ranjani, Bhattacharya, Rohit, Nabi, Razieh, Ogburn, Elizabeth L., and Shpitser, Ilya
Subjects: Statistics - Methodology
Abstract: Despite the growing interest in causal and statistical inference for settings with data dependence, few methods currently exist to account for missing data in dependent data settings; most classical missing data methods in statistics and causal inference treat data units as independent and identically distributed (i.i.d.). We develop a graphical modeling based framework for causal inference in the presence of entangled missingness, defined as missingness with data dependence. We distinguish three different types of entanglements that can occur, supported by real-world examples. We give sound and complete identification results for all three settings. We show that existing missing data models may be extended to cover entanglements arising from (1) target law dependence and (2) missingness process dependence, while those arising from (3) missingness interference require a novel approach. We demonstrate the use of our entangled missingness framework on synthetic data. Finally, we discuss how, subject to a certain reinterpretation of the variables in the model, our model for missingness interference extends missing data methods to novel missing data patterns in i.i.d. settings.
Published: 2023

10. Development of digital sideband separating down-conversion for Yuan-Tseh Lee Array

Author: Li, Chao-Te, Kubo, Derek, Cheng, Jen-Chieh, Kuroda, John, Srinivasan, Ranjani, Ho, Solomon, Guzzino, Kim, and Chen, Ming-Tang
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: This report presents a down-conversion method involving digital sideband separation for the Yuan Tseh Lee Array to double the processing bandwidth. The receiver consists of a MMIC HEMT LNA frontend operating at a wavelength of 3 mm, and sub-harmonic mixers that output signals at intermediate frequencies of 2 - 18 GHz. The sideband separation scheme involves an analog 90 degree hybrid followed by two mixers that provide down conversion of the IF signal to a pair of in phase (I) and quadrature (Q) signals in baseband. The I and Q baseband signals are digitized using 5 Giga sample per second analog to digital converters. A second hybrid is digitally implemented using field programmable gate arrays to produce two sidebands, each with a bandwidth of 1.6 GHz. The 2 x 1.6 GHz band can be tuned to cover any 3.2 GHz window within the aforementioned IF range of the array. Sideband rejection ratios (SRRs) above 20 dB can be obtained across the 3.2 GHz bandwidth by equalizing the power and delay between the I and Q baseband signals. Furthermore, SRRs above 30 dB can be achieved when calibration is applied., Comment: 8 pages, 12 figures
Published: 2022
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11. Commissioning of Namakanui on the JCMT

Author: Mizuno, Izumi, Friberg, Per, Berthold, Ryan, Parsons, Harriet, Han, Chih-Chiang, Acohido, Alexis, Bell, Graham, Berry, David, Bintley, Dan, Chen, Ming-Tang, Clark, Alyssa, Cookson, Jamie, Demattos, Vernon, Dempsey, Jessica, Fleck, Jason, Fu, Kuo-chieh, Fuchs, Miriam, Graves, Sarah, Ho, Paul, Hsu, Sung-Po, Huang, YauDe, Jiang, Xue-Jian, Kubo, Derek, JohnKuroda, Li, Shaoliang, Mairs, Steve, Matulonis, Callie, Neal, Mailani, Oliveira, Neal, Purves, Maren, Rawlings, Mark, Shih, Ya-Che, Silva, Kevin, Sison, Ed, Smith, Patrice, Srinivasan, Ranjani, Stahm, William, Tetarenko, Alexandra J., Torne, Pablo, Walther, Craig, Wang, Chao-Ching, and Wei, Ta-Shun
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Namakanui is an instrument containing three inserts in an ALMA type Dewar. The three inserts are Alaihi, Uu and Aweoweo operating around 86, 230 and 345GHz. The receiver is being commissioned on the JCMT. It will be used for both Single dish and VLBI observations. We will present commissioning results and the system., Comment: 19 pages, 16 figures, Proceedings of SPIE
Published: 2020

12. Path Dependent Structural Equation Models

Author: Srinivasan, Ranjani, Lee, Jaron, Bhattacharya, Rohit, Ahmidi, Narges, and Shpitser, Ilya
Subjects: Statistics - Methodology, Computer Science - Machine Learning
Abstract: Causal analyses of longitudinal data generally assume that the qualitative causal structure relating variables remains invariant over time. In structured systems that transition between qualitatively different states in discrete time steps, such an approach is deficient on two fronts. First, time-varying variables may have state-specific causal relationships that need to be captured. Second, an intervention can result in state transitions downstream of the intervention different from those actually observed in the data. In other words, interventions may counterfactually alter the subsequent temporal evolution of the system. We introduce a generalization of causal graphical models, Path Dependent Structural Equation Models (PDSEMs), that can describe such systems. We show how causal inference may be performed in such models and illustrate its use in simulations and data obtained from a septoplasty surgical procedure.
Published: 2020

13. Causal determinants of postoperative length of stay in cardiac surgery using causal graphical learning

Author: Lee, Jaron J.R., Srinivasan, Ranjani, Ong, Chin Siang, Alejo, Diane, Schena, Stefano, Shpitser, Ilya, Sussman, Marc, Whitman, Glenn J.R., and Malinsky, Daniel
Published: 2023
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14. Dimensionality reduction of calcium-imaged neuronal population activity

Author: Koh, Tze Hui, Bishop, William E., Kawashima, Takashi, Jeon, Brian B., Srinivasan, Ranjani, Mu, Yu, Wei, Ziqiang, Kuhlman, Sandra J., Ahrens, Misha B., Chase, Steven M., and Yu, Byron M.
Published: 2023
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15. Electronics Instrumentation for the Greenland Telescope

Author: Kubo, Derek, Han, Chih-Chiang, Nishioka, Hiroaki, Chilson, Ryan, Srinivasan, Ranjani, Yen, Sheng- Feng, Fu, Kuo-Chieh, Jiang, Homin, Liu, Kuan-Yu, Wei, Ta-Shun, Huang, Chih-Wei, Yu, Chen- Yu, Oshiro, Peter, Chang, Shu-Hao, Chen, Chung-Cheng, Raffin, Philippe, Huang, Yau-De, Martin-Cocher, Pierre, Chen, Ming-Tang, Inoue, Makoto, Matsushita, Satoki, Asada, Keiichi, Koyama, Shoko, Koch, Patrick, Ho, Paul T. P., Shaw, Yang-Tai, Norton, Timothy J., Patel, Nimesh A., Doeleman, Shepherd S., Bintley, Daniel, Walther, Craig, Friberg, Per, Dempsey, Jessica, Ogawa, Hideo, Kimura, Kimihiro, Hasegawa, Yutaka, Liu, Ching-Tang, Han, Kou-Chang, Chang, Song-Chu, and Lu, Li-Ming
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Greenland Telescope project has recently participated in an experiment to image the supermassive black hole shadow at the center of M87 using Very Long Baseline Interferometry technique in April of 2018. The antenna consists of the 12-m ALMA North American prototype antenna that was modified to support two auxiliary side containers and to withstand an extremely cold environment. The telescope is currently at Thule Air Base in Greenland with the long-term goal to move the telescope over the Greenland ice sheet to Summit Station. The GLT currently has a single cryostat which houses three dual polarization receivers that cover 84-96 GHz, 213-243 GHz and 271-377 GHz bands. A hydrogen maser frequency source in conjunction with high frequency synthesizers are used to generate the local oscillator references for the receivers. The intermediate frequency outputs of each receiver cover 4-8 GHz and are heterodyned to baseband for digitization within a set of ROACH-2 units then formatted for recording onto Mark-6 data recorders. A separate set of ROACH-2 units operating in parallel provides the function of auto-correlation for real-time spectral analysis. Due to the stringent instrumental stability requirements for interferometry a diagnostic test system was incorporated into the design. Tying all of the above equipment together is the fiber optic system designed to operate in a low temperature environment and scalable to accommodate a larger distance between the control module and telescope for Summit Station. A report on the progress of the above electronics instrumentation system will be provided., Comment: 19 pages, 37 figures, oral presentation at the June 2018 SPIE conference: Astronomical Telescopes + Instrumentation, in the section on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Published: 2018

16. Development of a Mach-Zehnder Modulator Photonic Local Oscillator Source

Author: Kubo, Derek Y., Srinivasan, Ranjani, Kiuchi, Hitoshi, and Chen, Ming-Tang
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Optics
Abstract: This paper describes the development of a photonic local oscillator (LO) source based on a 3-stage Mach-Zehnder modulator (MZM) device. The MZM laser synthesizer demonstrates the feasibility of providing the photonic reference LO for the Atacama Large Millimeter Array telescope located in Chile. This MZM approach to generating an LO by radio RF modulation of a monochromatic optical source provides the merits of wide frequency coverage of 4-130 GHz, tuning speed of about 0.2 seconds, and residual integrated phase noise performance of 0.3 degrees RMS at 100 GHz., Comment: IEEE Transactions on Microwave Theory and Techniques, July 2013
Published: 2018
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17. The Greenland Telescope: Antenna Retrofit Status and Future Plans

Author: Raffin, Philippe, Ho, Paul T. P., Asada, Keiichi, Blundell, Raymond, Bower, Geoffrey C., Burgos, Roberto, Chang, Chih-Cheng, Chen, Ming-Tang, Chu, You-Hua, Grimes, Paul K., Han, C. C., Huang, Chih-Wei L., Huang, Yau-De, Hsieh, Fang-Chia, Inoue, Makoto, Koch, Patrick M., Kubo, Derek, Leiker, Steve, Lin, Lupin, Liu, Ching-Tang, Lo, Shih-Hsiang, Martin-Cocher, Pierre, Matsushita, Satoki, Nakamura, Masanori, Meyer-Zhao, Zheng, Nishioka, Hiroaki, Norton, Tim, Nystrom, George, Paine, Scott N., Patel, Nimesh A., Pu, Hung-Yi, Snow, William, Sridharan, T. K., Srinivasan, Ranjani, and Wang, Jackie
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract: Since the ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO), SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA) are working jointly to relocate the antenna to Greenland. This paper shows the status of the antenna retrofit and the work carried out after the recommissioning and subsequent disassembly of the antenna at the VLA has taken place. The next coming months will see the start of the antenna reassembly at Thule Air Base. These activities are expected to last until the fall of 2017 when commissioning should take place. In parallel, design, fabrication and testing of the last components are taking place in Taiwan.
Published: 2016
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18. SWARM: A 32 GHz Correlator and VLBI Beamformer for the Submillimeter Array

Author: Primiani, Rurik A., Young, Kenneth H., Young, André, Patel, Nimesh, Wilson, Robert W., Vertatschitsch, Laura, Chitwood, Billie B., Srinivasan, Ranjani, MacMahon, David, and Weintroub, Jonathan
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: A 32 GHz bandwidth VLBI capable correlator and phased array has been designed and deployed at the Smithsonian Astrophysical Observatory's Submillimeter Array (SMA). The SMA Wideband Astronomical ROACH2 Machine (SWARM) integrates two instruments: a correlator with 140 kHz spectral resolution across its full 32 GHz band, used for connected interferometric observations, and a phased array summer used when the SMA participates as a station in the Event Horizon Telescope (EHT) Very Long Baseline Interferometry (VLBI) array. For each SWARM quadrant, Reconfigurable Open Architecture Computing Hardware (ROACH2) units shared under open source from the Collaboration for Astronomy Signal Processing and Electronics Research (CASPER) are equipped with a pair of ultra-fast Analog-to- Digital Converters (ADCs), a Field Programmable Gate Array (FPGA) processor, and eight 10 Gigabit Ethernet ports. A VLBI data recorder interface designated the SWARM Digital Back End, or SDBE, is implemented with a ninth ROACH2 per quadrant, feeding four Mark6 VLBI recorders with an aggregate recording rate of 64 Gbps. This paper describes the design and implementation of SWARM, as well as its deployment at SMA with reference to verification and science data., Comment: 21 pages, 12 figures, pdflatex, accepted for publication in the Journal of Astronomical Instrumentation
Published: 2016

19. The Greenland Telescope (GLT): Antenna status and future plans

Author: Raffin, Philippe, Algaba-Marcos, Juan Carlos, Asada, Keichi, Blundell, Raymond, Burgos, Roberto, Chang, Chih-Cheng, Chen, Ming-Tang, Christensen, Robert, Grimes, Paul K., Han, C. C., Ho, Paul T. P., Huang, Yau-De, Inoue, Makoto, Koch, Patrick M., Kubo, Derek, Leiker, Steve, Liu, Ching-Tang, Martin-Cocher, Pierre, Matsushita, Satoki, Nakamura, Masanori, Nishioka, Hiroaki, Nystrom, George, Paine, Scott N., Patel, Nimesh A., Pradel, Nicolas, Pu, Hung-Yi, Shen, H. -Y., Snow, William, Sridharan, T. K., Srinivasan, Ranjani, Tong, Edward, and Wang, Jackie
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO) in 2011. SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA), SAO's main partner for this project, are working jointly to relocate the antenna to Greenland to carry out millimeter and submillimeter VLBI observations. This paper presents the work carried out on upgrading the antenna to enable operation in the Arctic climate by the GLT Team to make this challenging project possible, with an emphasis on the unexpected telescope components that had to be either redesigned or changed. Five-years of inactivity, with the antenna laying idle in the desert of New Mexico, coupled with the extreme weather conditions of the selected site in Greenland have it necessary to significantly refurbish the antenna. We found that many components did need to be replaced, such as the antenna support cone, the azimuth bearing, the carbon fiber quadrupod, the hexapod, the HVAC, the tiltmeters, the antenna electronic enclosures housing servo and other drive components, and the cables. We selected Vertex, the original antenna manufacturer, for the main design work, which is in progress. The next coming months will see the major antenna components and subsystems shipped to a site of the US East Coast for test-fitting the major antenna components, which have been retrofitted. The following step will be to ship the components to Greenland to carry out VLBI and single dish observations. Antenna reassembly at Summit Station should take place during the summer of 2018., Comment: 10 pages, 8 figures
Published: 2014
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20. The persistent shadow of the supermassive black hole of M 87

Author: Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Doeleman, Sheperd S., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Edward, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Violette Impellizzeri, C. M., Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Salas, León David Sosapanta, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Weintroub, Jonathan, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Young, André, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Anton Zensus, J., Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Allardi, Alexander, Chang, Shu-Hao, Chang, Chih-Cheng, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Faber, Aaron, Gale, David M., Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Hernández-Rebollar, José Luis, Huang, Yau-De, Jiang, Homin, Jinchi, Hao, Kimura, Kimihiro, Kubo, Derek, Li, Chao-Te, Lin, Lupin C.-C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Martin-Cocher, Pierre, Meyer-Zhao, Zheng, Montaña, Alfredo, Moraghan, Anthony, Moreno-Nolasco, Marcos Emir, Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Pradel, Nicolas, Principe, Giacomo, Raffin, Philippe, Rodríguez-Montoya, Iván, Shaw, Paul, Snow, William, Sridharan, Tirupati Kumara, Srinivasan, Ranjani, Wei, Ta-Shun, Yu, Chen-Yu, Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Doeleman, Sheperd S., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Edward, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Violette Impellizzeri, C. M., Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Salas, León David Sosapanta, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Weintroub, Jonathan, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Young, André, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Anton Zensus, J., Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Allardi, Alexander, Chang, Shu-Hao, Chang, Chih-Cheng, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Faber, Aaron, Gale, David M., Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Hernández-Rebollar, José Luis, Huang, Yau-De, Jiang, Homin, Jinchi, Hao, Kimura, Kimihiro, Kubo, Derek, Li, Chao-Te, Lin, Lupin C.-C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Martin-Cocher, Pierre, Meyer-Zhao, Zheng, Montaña, Alfredo, Moraghan, Anthony, Moreno-Nolasco, Marcos Emir, Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Pradel, Nicolas, Principe, Giacomo, Raffin, Philippe, Rodríguez-Montoya, Iván, Shaw, Paul, Snow, William, Sridharan, Tirupati Kumara, Srinivasan, Ranjani, Wei, Ta-Shun, and Yu, Chen-Yu
Published: 2024
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21. The Black Hole Explorer:astrophysics mission concept engineering study report

Author: Coyle, Laura E., Perrin, Marshall D., Matsuura, Shuji, Peretz, Eliad, Kurczynski, Peter, Johnson, Michael, Houston, Janice, Sridharan, Tirupati Kumara, Wang, Jade, Galison, Peter, Gamble, Ronald, Marrone, Daniel P., Noble, Scott, Melnick, Gary, Petrov, Leonid, Rana, Hannah, Haworth, Kari, Doeleman, Sheperd S., Issaoun, Sara, Hadar, Shahar, Lupsasca, Alexandru, Tong, Edward, Akiyama, Kazunori, Srinivasan, Ranjani, Boroson, Dan, Yang, Guangning, Hoerbelt, Tiffany, Small, Jeffrey, Honma, Mareki, Bilyeu, Bryan, Canavan, Ed, Shtyrkova, Katia, Lafon, Robert, Paritsky, Lenny, Sinclair, Laura C., Silver, Mark, Gurvits, Leonid I., Kovalev, Yuri, Lehmensiek, Robert, Jiao, Hua, Blackburn, Lindy, Brosius, Alexandra, Butler, Rick, Chael, Andrew, Chang, Dominic, Chatterjee, Koushik, Cheimets, Peter, D'orazio, Daniel, Essinger-hileman, Thomas, Fish, Vincent, Fitzpatrick, Garret, Gammie, Charles, Gelles, Zachary, Hecht, Michael, Kauffmann, Jens, Lucey, Jared, Ma, Chung-pei, Matsumura, Mark, Palumbo, Daniel, Pesce, Dominic, Piepmeier, Jeff, Roberts, Christopher J., Roelofs, Freek, Tiede, Paul, Verniero, Jaye, Wielgus, Maciek, Wollack, Ed, Wong, George N., Gilchrist, Kelsey, Carmical, Kayla, Lewis, Andrew, Wertheim, Maya, Shavit, Keshet, Coyle, Laura E., Perrin, Marshall D., Matsuura, Shuji, Peretz, Eliad, Kurczynski, Peter, Johnson, Michael, Houston, Janice, Sridharan, Tirupati Kumara, Wang, Jade, Galison, Peter, Gamble, Ronald, Marrone, Daniel P., Noble, Scott, Melnick, Gary, Petrov, Leonid, Rana, Hannah, Haworth, Kari, Doeleman, Sheperd S., Issaoun, Sara, Hadar, Shahar, Lupsasca, Alexandru, Tong, Edward, Akiyama, Kazunori, Srinivasan, Ranjani, Boroson, Dan, Yang, Guangning, Hoerbelt, Tiffany, Small, Jeffrey, Honma, Mareki, Bilyeu, Bryan, Canavan, Ed, Shtyrkova, Katia, Lafon, Robert, Paritsky, Lenny, Sinclair, Laura C., Silver, Mark, Gurvits, Leonid I., Kovalev, Yuri, Lehmensiek, Robert, Jiao, Hua, Blackburn, Lindy, Brosius, Alexandra, Butler, Rick, Chael, Andrew, Chang, Dominic, Chatterjee, Koushik, Cheimets, Peter, D'orazio, Daniel, Essinger-hileman, Thomas, Fish, Vincent, Fitzpatrick, Garret, Gammie, Charles, Gelles, Zachary, Hecht, Michael, Kauffmann, Jens, Lucey, Jared, Ma, Chung-pei, Matsumura, Mark, Palumbo, Daniel, Pesce, Dominic, Piepmeier, Jeff, Roberts, Christopher J., Roelofs, Freek, Tiede, Paul, Verniero, Jaye, Wielgus, Maciek, Wollack, Ed, Wong, George N., Gilchrist, Kelsey, Carmical, Kayla, Lewis, Andrew, Wertheim, Maya, and Shavit, Keshet
Published: 2024

22. Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope

Author: Doeleman, Sheperd S., primary, Barrett, John, additional, Blackburn, Lindy, additional, Bouman, Katherine L., additional, Broderick, Avery E., additional, Chaves, Ryan, additional, Fish, Vincent L., additional, Fitzpatrick, Garret, additional, Freeman, Mark, additional, Fuentes, Antonio, additional, Gómez, José L., additional, Haworth, Kari, additional, Houston, Janice, additional, Issaoun, Sara, additional, Johnson, Michael D., additional, Kettenis, Mark, additional, Loinard, Laurent, additional, Nagar, Neil, additional, Narayanan, Gopal, additional, Oppenheimer, Aaron, additional, Palumbo, Daniel C. M., additional, Patel, Nimesh, additional, Pesce, Dominic W., additional, Raymond, Alexander W., additional, Roelofs, Freek, additional, Srinivasan, Ranjani, additional, Tiede, Paul, additional, Weintroub, Jonathan, additional, and Wielgus, Maciek, additional
Published: 2023
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23. The Black Hole Explorer: back end electronics

Author: Coyle, Laura E., Matsuura, Shuji, Perrin, Marshall D., Srinivasan, Ranjani, Weintroub, Jonathan, Raffanti, Rick, Bilyeu, Bryan, Gauron, Thomas, Test, John, Richards, Elliot, Fernandez, Manuel, Freeman, Mark, Cheimets, Peter, Gendelman, Mauricio, Haworth, Kari, Houston, Janice, Johnson, Michael D., Mamani, Emilia, Marrone, Daniel, Pola, Ariel L., and Wang, Jade
Published: 2024
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24. High data rate laser communications for the Black Hole Explorer

Author: Coyle, Laura E., Matsuura, Shuji, Perrin, Marshall D., Wang, Jade, Bilyeu, Bryan, Boroson, Don, Caplan, Dave, Riesing, Kat, Robinson, Bryan, Schieler, Curt, Johnson, Michael D., Blackburn, Lindy, Haworth, Kari, Houston, Janice, Issaoun, Sara, Palumbo, Daniel, Richards, Elliot, Srinivasan, Ranjani, Weintraub, Jonathan, and Marrone, Dan
Published: 2024
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25. The Black Hole Explorer: instrument system overview

Author: Coyle, Laura E., Matsuura, Shuji, Perrin, Marshall D., Marrone, Daniel P., Houston, Janice, Akiyama, Kazunori, Bilyeu, Bryan, Boroson, Don, Grimes, Paul, Haworth, Kari, Lehmensiek, Robert, Peretz, Eliad, Rana, Hannah, Sinclair, Laura C., Kumara, Sridharan Tirupati, Srinivasan, Ranjani, Tong, Edward, Wang, Jade, Weintroub, Jonathan, and Johnson, Michael D.
Published: 2024
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26. The Black Hole Explorer: astrophysics mission concept engineering study report

Author: Coyle, Laura E., Matsuura, Shuji, Perrin, Marshall D., Peretz, Eliad, Kurczynski, Peter, Johnson, Michael D., Houston, Janice, Kumara Sridharan, Tirupati, Wang, Jade, Galison, Peter, Gamble, Ronald, Marrone, Daniel, Noble, Scott, Melnick, Gary, Petrov, Leonid, Rana, Hannah, Haworth, Kari, Doeleman, Sheperd S., Issaoun, Sara, Hadar, Shahar, Lupsasca, Alexandru, Tong, Edward, Akiyama, Kazunori, Srinivasan, Ranjani, Boroson, Dan, Yang, Guangning, Hoerbelt, Tiffany, Small, Jeffrey, Honma, Mareki, Bilyeu, Bryan, Canavan, Ed, Shtyrkova, Katia, Lafon, Robert, Paritsky, Lenny, Sinclair, Laura C., Silver, Mark, Gurvits, Leonid, Kovalev, Yuri, Lehmensiek, Robert, Jiao, Hua, Blackburn, Lindy, Brosius, Alexandra, Butler, Rick, Chael, Andrew, Chang, Dominic, Chatterjee, Koushik, Cheimets, Peter, D'Orazio, Daniel, Essinger-Hileman, Thomas, Fish, Vincent, Fitzpatrick, Garret, Gammie, Charles, Gelles, Zachary, Hecht, Michael, Kauffmann, Jens, Lucey, Jared, Ma, Chung-Pei, Matsumura, Mark, Palumbo, Daniel, Pesce, Dominic, Piepmeier, Jeff, Roberts, Christopher J., Roelofs, Freek, Tiede, Paul, Verniero, Jaye, Wielgus, Maciek, Wollack, Ed, Wong, George N., Gilchrist, Kelsey, Carmical, Kayla, Lewis, Andrew, Wertheim, Maya, and Shavit, Keshet
Published: 2024
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27. The Black Hole Explorer: motivation and vision

Author: Coyle, Laura E., Matsuura, Shuji, Perrin, Marshall D., Johnson, Michael D., Akiyama, Kazunori, Baturin, Rebecca, Bilyeu, Bryan, Blackburn, Lindy, Boroson, Don, Cárdenas-Avendaño, Alejandro, Chael, Andrew, Chan, Chi-kwan, Chang, Dominic, Cheimets, Peter, Chou, Cathy, Doeleman, Sheperd S., Farah, Joseph, Galison, Peter, Gamble, Ronald, Gammie, Charles F., Gelles, Zachary, Gómez, José L., Gralla, Samuel E., Grimes, Paul, Gurvits, Leonid I., Hadar, Shahar, Haworth, Kari, Hada, Kazuhiro, Hecht, Michael H., Honma, Mareki, Houston, Janice, Hudson, Ben, Issaoun, Sara, Jia, He, Jorstad, Svetlana, Kauffman, Jens, Kovalev, Yuri Y., Kurczynski, Peter, Lafon, Robert E., Lupsasca, Alexandru, Lehmensiek, Robert, Ma, Chung-Pei, Marrone, Daniel P., Marscher, Alan P., Melnick, Gary, Narayan, Ramesh, Niinuma, Kotaro, Noble, Scott C., Palmer, Eric J., Palumbo, Daniel C. M., Paritsky, Lenny, Peretz, Eliad, Pesce, Dominic, Plavin, Alexander, Quataert, Eliot, Rana, Hannah, Ricarte, Angelo, Roelofs, Freek, Shtyrkova, Katia, Sinclair, Laura C., Small, Jeffrey, Kumara, Sridharan Tirupati, Srinivasan, Ranjani, Strominger, Andrew, Tiede, Paul, Tong, Edward, Wang, Jade, Weintroub, Jonathan, Wielgus, Maciek, and Wong, George
Published: 2024
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28. The Greenland Telescope—Construction, Commissioning, and Operations in Pituffik

Author: Chen, Ming-Tang, primary, Asada, Keiichi, additional, Matsushita, Satoki, additional, Raffin, Philippe, additional, Inoue, Makoto, additional, Ho, Paul T. P., additional, Han, Chih-Chiang, additional, Kubo, Derek, additional, Norton, Timothy, additional, Patel, Nimesh A., additional, Nystrom, George, additional, Huang, Chih-Wei L., additional, Martin-Cocher, Pierre, additional, Yi Koay, Jun, additional, Romero-Cañizales, Cristina, additional, Liu, Ching-Tang, additional, Huang, Teddy, additional, Liu, Kuan-Yu, additional, Wei, Tashun, additional, Chang, Shu-Hao, additional, Chilson, Ryan, additional, Oshiro, Peter, additional, Jiang, Homin, additional, Li, Chao-Te, additional, Bower, Geoffrey, additional, Shaw, Paul, additional, Nishioka, Hiroaki, additional, Koch, Patrick M., additional, Chen, Chung-Cheng, additional, Srinivasan, Ranjani, additional, Rao, Ramprasad, additional, Snow, William, additional, Jinchi, Hao, additional, Han, Kuo-Chang, additional, Chang, Song-Chu, additional, Lu, Li-Ming, additional, Ogawa, Hideo, additional, Kimura, Kimihiro, additional, Hasegawa, Yutaka, additional, Pu, Hung-Yi, additional, Koyama, Shoko, additional, Nakamura, Masanori, additional, Bintley, Daniel, additional, Walther, Craig, additional, Friberg, Per, additional, Dempsey, Jessica, additional, Sriharan, T. K., additional, Srikanth, Sivasankaran, additional, Doeleman, Sheperd S., additional, Brissenden, Roger, additional, Algaba Marcos, Juan-Carlos, additional, Jeter, Britt, additional, Kuo, Cheng-Yu, additional, and Park, Jongho, additional
Published: 2023
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29. Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope

Author: National Science Foundation (US), Gordon and Betty Moore Foundation, Consejo Nacional de Ciencia y Tecnología (México), Universidad Nacional Autónoma de México, Harvard University, John Templeton Foundation, Agencia Nacional de Investigación y Desarrollo (Chile), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), Doeleman, Sheperd S., Barrett, John, Blackburn, Lindy, Bouman, Katherine L., Broderick, Avery E., Chaves, Ryan, Fish, Vincent L., Fitzpatrick, Garret, Freeman, Mark, Fuentes, Antonio, Gómez, José L., Haworth, Kari, Houston, Janice, Issaoun, Sara, Johnson, Michael D., Kettenis, Mark, Loinard, Laurent, Nagar, Neil M., Narayanan, Gopal, Oppenheimer, Aaron, Palumbo, Daniel C. M., Patel, Nimesh, Pesce, Dominic W., Raymond, Alexander W., Roelofs, Freek, Srinivasan, Ranjani, Tiede, Paul, Weintroub, Jonathan, Wielgus, Maciek, National Science Foundation (US), Gordon and Betty Moore Foundation, Consejo Nacional de Ciencia y Tecnología (México), Universidad Nacional Autónoma de México, Harvard University, John Templeton Foundation, Agencia Nacional de Investigación y Desarrollo (Chile), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), Doeleman, Sheperd S., Barrett, John, Blackburn, Lindy, Bouman, Katherine L., Broderick, Avery E., Chaves, Ryan, Fish, Vincent L., Fitzpatrick, Garret, Freeman, Mark, Fuentes, Antonio, Gómez, José L., Haworth, Kari, Houston, Janice, Issaoun, Sara, Johnson, Michael D., Kettenis, Mark, Loinard, Laurent, Nagar, Neil M., Narayanan, Gopal, Oppenheimer, Aaron, Palumbo, Daniel C. M., Patel, Nimesh, Pesce, Dominic W., Raymond, Alexander W., Roelofs, Freek, Srinivasan, Ranjani, Tiede, Paul, Weintroub, Jonathan, and Wielgus, Maciek
Abstract: We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (EHT). This program—the next-generation Event Horizon Telescope (ngEHT)—will form a networked global array of radio dishes capable of making high-fidelity real-time movies of supermassive black holes (SMBH) and their emanating jets. This builds upon the EHT principally by deploying additional modest-diameter dishes to optimized geographic locations to enhance the current global mm/submm wavelength Very Long Baseline Interferometric (VLBI) array, which has, to date, utilized mostly pre-existing radio telescopes. The ngEHT program further focuses on observing at three frequencies simultaneously for increased sensitivity and Fourier spatial frequency coverage. Here, the concept, science goals, design considerations, station siting, and instrument prototyping are discussed, and a preliminary reference array to be implemented in phases is described.
Published: 2023

30. A ring-like accretion structure in M87 connecting its black hole and jet

Author: Lu, Ru-Sen, primary, Asada, Keiichi, additional, Krichbaum, Thomas P., additional, Park, Jongho, additional, Tazaki, Fumie, additional, Pu, Hung-Yi, additional, Nakamura, Masanori, additional, Lobanov, Andrei, additional, Hada, Kazuhiro, additional, Akiyama, Kazunori, additional, Kim, Jae-Young, additional, Marti-Vidal, Ivan, additional, Gómez, José L., additional, Kawashima, Tomohisa, additional, Yuan, Feng, additional, Ros, Eduardo, additional, Alef, Walter, additional, Britzen, Silke, additional, Bremer, Michael, additional, Broderick, Avery E., additional, Doi, Akihiro, additional, Giovannini, Gabriele, additional, Giroletti, Marcello, additional, Ho, Paul T. P., additional, Honma, Mareki, additional, Hughes, David H., additional, Inoue, Makoto, additional, Jiang, Wu, additional, Kino, Motoki, additional, Koyama, Shoko, additional, Lindqvist, Michael, additional, Liu, Jun, additional, Marscher, Alan P., additional, Matsushita, Satoki, additional, Nagai, Hiroshi, additional, Rottmann, Helge, additional, Savolainen, Tuomas, additional, Schuster, Karl-Friedrich, additional, Shen, Zhi-Qiang, additional, de Vicente, Pablo, additional, Walker, R. Craig, additional, Yang, Hai, additional, Zensus, J. Anton, additional, Algaba, Juan Carlos, additional, Allardi, Alexander, additional, Bach, Uwe, additional, Berthold, Ryan, additional, Bintley, Dan, additional, Byun, Do-Young, additional, Casadio, Carolina, additional, Chang, Shu-Hao, additional, Chang, Chih-Cheng, additional, Chang, Song-Chu, additional, Chen, Chung-Chen, additional, Chen, Ming-Tang, additional, Chilson, Ryan, additional, Chuter, Tim C., additional, Conway, John, additional, Crew, Geoffrey B., additional, Dempsey, Jessica T., additional, Dornbusch, Sven, additional, Faber, Aaron, additional, Friberg, Per, additional, García, Javier González, additional, Garrido, Miguel Gómez, additional, Han, Chih-Chiang, additional, Han, Kuo-Chang, additional, Hasegawa, Yutaka, additional, Herrero-Illana, Ruben, additional, Huang, Yau-De, additional, Huang, Chih-Wei L., additional, Impellizzeri, Violette, additional, Jiang, Homin, additional, Jinchi, Hao, additional, Jung, Taehyun, additional, Kallunki, Juha, additional, Kirves, Petri, additional, Kimura, Kimihiro, additional, Koay, Jun Yi, additional, Koch, Patrick M., additional, Kramer, Carsten, additional, Kraus, Alex, additional, Kubo, Derek, additional, Kuo, Cheng-Yu, additional, Li, Chao-Te, additional, Lin, Lupin Chun-Che, additional, Liu, Ching-Tang, additional, Liu, Kuan-Yu, additional, Lo, Wen-Ping, additional, Lu, Li-Ming, additional, MacDonald, Nicholas, additional, Martin-Cocher, Pierre, additional, Messias, Hugo, additional, Meyer-Zhao, Zheng, additional, Minter, Anthony, additional, Nair, Dhanya G., additional, Nishioka, Hiroaki, additional, Norton, Timothy J., additional, Nystrom, George, additional, Ogawa, Hideo, additional, Oshiro, Peter, additional, Patel, Nimesh A., additional, Pen, Ue-Li, additional, Pidopryhora, Yurii, additional, Pradel, Nicolas, additional, Raffin, Philippe A., additional, Rao, Ramprasad, additional, Ruiz, Ignacio, additional, Sanchez, Salvador, additional, Shaw, Paul, additional, Snow, William, additional, Sridharan, T. K., additional, Srinivasan, Ranjani, additional, Tercero, Belén, additional, Torne, Pablo, additional, Traianou, Efthalia, additional, Wagner, Jan, additional, Walther, Craig, additional, Wei, Ta-Shun, additional, Yang, Jun, additional, and Yu, Chen-Yu, additional
Published: 2023
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31. Prospects of GPU Tensor Core Correlation for the SMA and the ngEHT

Author: Yu, Wei, primary, Romein, John W., additional, Dursi, L. Jonathan, additional, Lu, Ru-Sen, additional, Pope, Adrian, additional, Callanan, Gareth, additional, Pesce, Dominic W., additional, Blackburn, Lindy, additional, Merry, Bruce, additional, Srinivasan, Ranjani, additional, Kim, Jongsoo, additional, and Weintroub, Jonathan, additional
Published: 2023
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32. Dimensionality reduction of calcium-imaged neuronal population activity

Author: Koh, Tze Hui, primary, Bishop, William E., additional, Kawashima, Takashi, additional, Jeon, Brian B., additional, Srinivasan, Ranjani, additional, Mu, Yu, additional, Wei, Ziqiang, additional, Kuhlman, Sandra J., additional, Ahrens, Misha B., additional, Chase, Steven M., additional, and Yu, Byron M., additional
Published: 2022
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33. Causal determinants of postoperative length of stay in cardiac surgery using causal graphical learning

Author: Lee, Jaron J.R., primary, Srinivasan, Ranjani, additional, Ong, Chin Siang, additional, Alejo, Diane, additional, Schena, Stefano, additional, Shpitser, Ilya, additional, Sussman, Marc, additional, Whitman, Glenn J.R., additional, and Malinsky, Daniel, additional
Published: 2022
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34. Control and monitoring software for the Greenland Telescope

Author: Huang, Chih-Wei Locutus, primary, Matsushita, Satoki, additional, Patel, Nimesh A., additional, Srinivasan, Ranjani, additional, Asada, Keiichi, additional, Bower, Geoffrey, additional, Chang, Shu-Hao, additional, Chen, Chung-Cheng, additional, Chen, Ming-Tang, additional, Chilson, Ryan, additional, Han, Chih-Chiang, additional, Ho, Paul T., additional, Huang, Yau-De, additional, Inoue, Makoto, additional, Jiang, Homin, additional, Koay, Jun Yi, additional, Koch, Patrick M., additional, Koyama, Shoko, additional, Kubo, Derek Y., additional, Kuo, Cheng-Yu, additional, Li, Chao-Te, additional, Liu, Ching-Tang, additional, Liu, Kuan-Yu, additional, Lo, Wen-Ping, additional, Martin-Cocher, Pierre, additional, Nakamura, Masanori, additional, Norton, Timothy J., additional, Nystrom, George, additional, Oshiro, Peter, additional, Park, Jongho, additional, Pu, Hung-Yi, additional, Raffin, Philippe, additional, Rao, Ramprasad, additional, Romero-Cañizales, Cristina, additional, Shaw, Paul, additional, Sridharan, Tirupati K., additional, Wei, Ta-Shun, additional, and Yu, Chen-Yu, additional
Published: 2020
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35. Commissioning of Nāmakanui on the JCMT

Author: Mizuno, Izumi, primary, Friberg, Per, additional, Berthold, Ryan, additional, Parsons, Harriet, additional, Han, Chih-Chiang, additional, Acohido, Alexis, additional, Bell, Graham, additional, Berry, David, additional, Bintley, Dan, additional, Chen, Ming-Tang, additional, Clark, Alyssa, additional, Cookson, Jamie, additional, DeMattos, Vernon, additional, Dempsey, Jessica, additional, Fleck, Jason, additional, Fu, Kuo-Chieh, additional, Fuchs, Miriam, additional, Graves, Sarah, additional, Ho, Paul, additional, Hsu, Sung-Po, additional, Huang, YauDe, additional, Jiang, Xue-Jian, additional, Kubo, Derek Y., additional, Kuroda, John, additional, Li, Shaoliang, additional, Mairs, Steve, additional, Matulonis, Callie, additional, Neil, Mailani, additional, Oliveira, Neal, additional, Purves, Maren, additional, Rawlings, Mark, additional, Shih, Ya-Che, additional, Silva, Kevin, additional, Sison, Ed, additional, Smith, Patrice, additional, Srinivasan, Ranjani, additional, Stahm, William, additional, Tetarenko, Alexandra J., additional, Torne, Pablo, additional, Walther, Craig, additional, Wang, Chao-Ching, additional, and Wei, Ta-Shun, additional
Published: 2020
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36. Status of scientific commissioning of the Greenland Telescope

Author: Koay, Jun Yi, primary, Matsushita, Satoki, additional, Asada, Keiichi, additional, Patel, Nimesh, additional, Huang, Chih-Wei L., additional, Bower, Geoff, additional, Chang, Shu-Hao, additional, Chen, Ming-Tang, additional, Chen, Chung-Cheng, additional, Chilson, Ryan, additional, Han, Chih-Chiang, additional, Ho, Paul T. P., additional, Huang, Yau-De, additional, Inoue, Makoto, additional, Jiang, Homin, additional, Koch, Patrick M., additional, Koyama, Shoko, additional, Kuo, Cheng-Yu, additional, Kubo, Derek Y., additional, Li, Chao-Te, additional, Liu, Ching-Tang, additional, Liu, Kuan-Yu, additional, Lo, Wen-Ping, additional, Martin-Cocher, Pierre L., additional, Nakamura, Masanori, additional, Norton, Timothy, additional, Nystrom, George, additional, Oshiro, Peter, additional, Park, Jongho, additional, Pu, Hung-Yi, additional, Raffin, Philippe, additional, Rao, Ramprasad, additional, Romero-Canizales, Cristina, additional, Shaw, Paul, additional, Sridharan, Tirupati, additional, Srinivasan, Ranjani, additional, Wei, Ta-Shun S., additional, and Yu, Chen-Yu, additional
Published: 2020
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37. Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

Author: Kim, Jae-Young, Krichbaum, Thomas P., Broderick, Avery E., Wielgus, Maciek, Blackburn, Lindy, Gomez, Jose L., Johnson, Michael D., Bouman, Katherine L., Chael, Andrew, Akiyama, Kazunori, Jorstad, Svetlana, Marscher, Alan P., Issaoun, Sara, Janssen, Michael, Chan, Chi-kwan, Savolainen, Tuomas, Pesce, Dominic W., Ozel, Feryal, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Boland, Wilfred, Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Friberg, Per, Fromm, Christian M., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jimenez-Rosales, Alejandra, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Lico, Rocco, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Palumbo, Daniel C. M., Park, Jongho, Patel, Nimesh, Pen, Ue-Li, Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Traianou, Efthalia, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Ward-Thompson, Derek, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wong, George N., Wu, Qingwen, Yoon, Doosoo, Young, Andre, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crowley, Joseph, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo, I, Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, John, David, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C-C, Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Antony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, Ziurys, Lucy, Kim, Jae-Young, Krichbaum, Thomas P., Broderick, Avery E., Wielgus, Maciek, Blackburn, Lindy, Gomez, Jose L., Johnson, Michael D., Bouman, Katherine L., Chael, Andrew, Akiyama, Kazunori, Jorstad, Svetlana, Marscher, Alan P., Issaoun, Sara, Janssen, Michael, Chan, Chi-kwan, Savolainen, Tuomas, Pesce, Dominic W., Ozel, Feryal, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Boland, Wilfred, Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Friberg, Per, Fromm, Christian M., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jimenez-Rosales, Alejandra, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Lico, Rocco, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Palumbo, Daniel C. M., Park, Jongho, Patel, Nimesh, Pen, Ue-Li, Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Traianou, Efthalia, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Ward-Thompson, Derek, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wong, George N., Wu, Qingwen, Yoon, Doosoo, Young, Andre, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crowley, Joseph, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo, I, Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, John, David, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C-C, Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Antony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, and Ziurys, Lucy
Abstract: 3C 279 is an archetypal blazar with a prominent radio jet that show broadband flux density variability across the entire electromagnetic spectrum. We use an ultra-high angular resolution technique - global Very Long Baseline Interferometry (VLBI) at 1.3 mm (230 GHz) - to resolve the innermost jet of 3C 279 in order to study its fine-scale morphology close to the jet base where highly variable gamma -ray emission is thought to originate, according to various models. The source was observed during four days in April 2017 with the Event Horizon Telescope at 230 GHz, including the phased Atacama Large Millimeter/submillimeter Array (ALMA), at an angular resolution of similar to 20 mu as (at a redshift of z=0.536 this corresponds to similar to 0.13 pc similar to 1700 Schwarzschild radii with a black hole mass M-BH=8x10(8) M-circle dot). Imaging and model-fitting techniques were applied to the data to parameterize the fine-scale source structure and its variation. We find a multicomponent inner jet morphology with the northernmost component elongated perpendicular to the direction of the jet, as imaged at longer wavelengths. The elongated nuclear structure is consistent on all four observing days and across different imaging methods and model-fitting techniques, and therefore appears robust. Owing to its compactness and brightness, we associate the northern nuclear structure as the VLBI core. This morphology can be interpreted as either a broad resolved jet base or a spatially bent jet. We also find significant day-to-day variations in the closure phases, which appear most pronounced on the triangles with the longest baselines. Our analysis shows that this variation is related to a systematic change of the source structure. Two inner jet components move non-radially at apparent speeds of similar to 15 c and similar to 20 c (similar to 1.3 and similar to 1.7 mu as day(-1), respectively), which more strongly supports the scenario of traveling shocks or instabilities in a be
Published: 2020

38. First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

Author: Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Blackburn, Lindy, Boland, Wilfred, Bouman, Katherine L., Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Gomez, Jose L., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Johnson, Michael D., Jorstad, Svetlana, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Jae-Young, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Krichbaum, Thomas P., Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Ozel, Feryal, Palumbo, Daniel C. M., Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Savolainen, Tuomas, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wong, George N., Wu, Qingwen, Young, Ken, Young, Andre, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crawford, Thomas M., Crowley, Joseph, David, John, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo I., Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C. -C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Paine, Scott N., Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Anthony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, Ziurys, Lucy, Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Blackburn, Lindy, Boland, Wilfred, Bouman, Katherine L., Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Gomez, Jose L., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Johnson, Michael D., Jorstad, Svetlana, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Jae-Young, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Krichbaum, Thomas P., Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Ozel, Feryal, Palumbo, Daniel C. M., Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Savolainen, Tuomas, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wong, George N., Wu, Qingwen, Young, Ken, Young, Andre, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crawford, Thomas M., Crowley, Joseph, David, John, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo I., Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C. -C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Paine, Scott N., Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Anthony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, and Ziurys, Lucy
Abstract: When surrounded by a transparent emission region, black holes are expected to reveal a dark shadow caused by gravitational light bending and photon capture at the event horizon. To image and study this phenomenon, we have assembled the Event Horizon Telescope, a global very long baseline interferometry array observing at a wavelength of 1.3 mm. This allows us to reconstruct event-horizon-scale images of the supermassive black hole candidate in the center of the giant elliptical galaxy M87. We have resolved the central compact radio source as an asymmetric bright emission ring with a diameter of 42 +/- 3 mu as, which is circular and encompasses a central depression in brightness with a flux ratio greater than or similar to 10: 1. The emission ring is recovered using different calibration and imaging schemes, with its diameter and width remaining stable over four different observations carried out in different days. Overall, the observed image is consistent with expectations for the shadow of a Kerr black hole as predicted by general relativity. The asymmetry in brightness in the ring can be explained in terms of relativistic beaming of the emission from a plasma rotating close to the speed of light around a black hole. We compare our images to an extensive library of ray-traced general-relativistic magnetohydrodynamic simulations of black holes and derive a central mass of M = (6.5 +/- 0.7) x 10(9) M-circle dot. Our radio-wave observations thus provide powerful evidence for the presence of supermassive black holes in centers of galaxies and as the central engines of active galactic nuclei. They also present a new tool to explore gravity in its most extreme limit and on a mass scale that was so far not accessible.
Published: 2019

39. Stiles–Crawford effect of the first kind: assessment of photoreceptor alignments following dark patching

Author: Kono, Momoyo, Enoch, Jay M, Strada, Elisabetta, Shih, Paul, Srinivasan, Ranjani, Lakshminarayanan, Vasudevan, Susilasate, Wilbur, and Graham, Andrew
Published: 2001
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40. The three point vernier alignment or acuity test (3Pt VA test): an analysis of variance

Author: Fang, Michelle Shih-Ming, Enoch, Jay M., Lakshminarayanan, Vasudevan, Kim, Eunice, Kono, Momoyo, Strada, Elisabetta, and Srinivasan, Ranjani
Published: 2000
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41. Commissioning the Yuan-Tseh Lee Array for Epoch of Reionization Observations with Intensity Mapping

Author: Srinivasan, Ranjani, primary, Operations, ASIAA Hawaii, additional, and Group, ASIAA Taipei YTLA, additional
Published: 2019
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42. The first-light receivers for the Greenland Telescope

Author: Chen, Ming-Tang, primary, Han, Johnson C., primary, Huang, Yau De, primary, Kubo, Derek, primary, Wei, Tashun, primary, Chang, Joshua S., primary, Inoue, Makota, primary, Matsushita, Satoki, primary, Asada, Keiichi, primary, Ho, Paul T. P., primary, Norton, Timothy, primary, Ogawa, Hideo, primary, Kimura, Kimihiro, primary, Hasagawa, Yutaka, primary, Chang, Chih-Cheng, primary, Huang, Ji-Dian, primary, Chen, Chung-Chen, primary, Raffin, Philippe, primary, Chilson, Ryan, primary, Srinivasan, Ranjani, primary, Liu, Kuan-Yu, primary, Li, Chao-Te, primary, Bintley, Daniel, primary, Wather, Craig, primary, Friberg, Per, primary, Dempsey, Jessica, primary, Srikanth, Sivasankaran, primary, and Liu, Ching-Tang, primary
Published: 2018
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43. Electronics instrumentation for the Greenland telescope

Author: Nishioka, Hiroaki, primary, Chilson, Ryan, primary, Srinivasan, Ranjani, primary, Wei, Ta-Shun, primary, Huang, Chih-Wei L., primary, Yu, Chen-Yu, primary, Oshiro, Peter, primary, Raffin, Philippe, primary, Huang, Yau-De, primary, Asada, Keiichi, primary, Koyama, Shoko, primary, Bintley, Daniel, primary, Walther, Craig, primary, Friberg, Per, primary, Chen, Ming-Tang, primary, Matsushita, Satoki, primary, Ho, Paul T. P., primary, Kubo, Derek Y., primary, Han, Johnson C. C., primary, Liu, Kuan-Yu, primary, Martin-Cocher, Pierre, primary, Yen, Sheng-Feng, primary, Fu, Kuo-Chieh, primary, Jiang, homin, primary, Chang, Shu-Hao, primary, Chen, Chung-Cheng, primary, Inoue, Makoto, primary, Koch, Patrick, primary, Shaw, Yang-Tai, primary, Norton, Timothy J., primary, Patel, Nimesh A., primary, Doeleman, Shepherd S., primary, Dempsey, Jessica, primary, Liu, Ching-Tang, primary, Han, Kou-Chang, primary, Chang, Song-Chu, primary, Lu, Li-Ming, primary, Ogawa, Hideo, primary, Kimura, Kimihiro, primary, and Hasegawa, Yutaka, primary
Published: 2018
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44. GLT receiver commissioning at JCMT and future JCMT instrumentation

Author: Friberg, Per, primary, Berthold, Ryan, primary, Chuter, Tim, primary, Walther, Craig, primary, Liu, Kuan-Yu, primary, Dempsey, Jessica, primary, Ho, Paul T. P., primary, McGregor, Helen, primary, Matsushita, Satoki, primary, Asada, Keiichi, primary, Koyama, Shoko, primary, Nishioka, Hiroaki, primary, Han, Johnson C. C., primary, Huang, Chih-Wei L., primary, Lin, Lupin C. C., primary, Wei, Ta-Shun, primary, Chen, Ming-Tang, primary, Kubo, Derek Y., primary, Srinivasan, Ranjani, primary, Bower, Geoff, primary, Oshiro, Peter, primary, Bintley, Daniel, primary, and Rao, Ramprasad, primary
Published: 2018
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45. The Greenland telescope: Thule operations

Author: Chen, Ming-Tang, primary, Raffin, Philippe A., primary, Ho, Paul T. P., primary, Asada, Keiichi, primary, Matsushita, Satoki, primary, Han, Chih-Chiang J., primary, Nishioka, Hiroaki, primary, Wei, Ta-Shun, primary, Koch, Patrick M., primary, Inoue, Makoto, primary, Nystrom, George U., primary, Kubo, Derek Y., primary, Chang, Jack C., primary, Hsieh, Fang-Chia, primary, Pu, Hung-Yi, primary, Lin, Lupin C., primary, Shaw, Paul Y., primary, Jiang, Homin, primary, Huang, Ted Y., primary, Huang, Locutus C., primary, Chang, Joshua S., primary, Norton, Timothy J., primary, Patel, Nimesh A., primary, Liu, Bill C., primary, Martin-Cocher, Pierre, primary, Chen, Chung-Chen, primary, Chilson, Ryan, primary, Srinivasan, Ranjani, primary, Liu, Kuan-Yu, primary, Yu, Chen-Yu, primary, Bower, Geoffrey C., primary, Oshiro, Peter, primary, Snow, William, primary, Koyama, Shoko, primary, Koay, Jun Yi, primary, Li, Chao-Te, primary, Lo, Weng-Ping, primary, Nakamura, Masanori, primary, Bintley, Daniel, primary, Walther, Craig, primary, Friberg, Per, primary, Dempsey, Jessica, primary, Sridharan, T.K., primary, Doeleman, Sheperd S., primary, Brissenden, Roger, primary, Ogawa, Hideo, primary, Hasegawa, Kimihiro, primary, Jinchi, Hao, primary, Han, Kuo-Chang, primary, Chang, Song-Chu, primary, Lu, Li-Ming L., primary, Marcos, Juan-Carlos Algaba, primary, Allardi, Alex, primary, Faber, Aaron, primary, Chen, Wei-Long, primary, Hsu, Fu-Li, primary, Meyer-Zhao, Zheng, primary, and Hasegawa, Yutaka, primary
Published: 2018
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46. Control and monitoring system for the Greenland telescope: computers, network and software

Author: Nishioka, Hiroaki, primary, Huang, Chih-Wei L., primary, Patel, Patel A., primary, Kubo, Derek Y., primary, Martin-Cocher, Pierre, primary, Han, Chih-Chiang J., primary, Yu, Chen-Yu, primary, Jiang, Homin, primary, Srinivasan, Ranjani, primary, Matsushita, Satoki, primary, Asada, Keiichi, primary, Bower, Geoffrey C., primary, Chang, Shu-Hao, primary, Chen, Ming-Tang, primary, Ho, Paul T. P., primary, Huang, Yau-De, primary, Inoue, Makoto, primary, Koyama, Shoko, primary, Lin, Lupin C. C., primary, Liu, Ching-Tang, primary, Norton, Timothy J., primary, Nystrom, George U., primary, Wei, Ta-Shun, primary, Berthold, Ryan M., primary, Friberg, Per, primary, Chuter, Tim, primary, Liu, Kuan-Yu, primary, Walther, Craig A., primary, Koay, Jun-Yi, primary, Lo, Wen-Ping, primary, Koch, Patrick M., primary, Peter, Oshiro, primary, Meyer-Zhao, Zheng, primary, Bintley, Dan, primary, Jessica, Dempsey, primary, Nakamura, Masanori, primary, and Doeleman, Sheperd S., primary
Published: 2018
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47. Commissioning status of the Greenland telescope

Author: Matsushita, Satoki, primary, Koay, Jun-Yi, primary, Lo, Wen-Ping, primary, Faber, Aaron, primary, Han, Kou-Chang, primary, Chang, Song-Chu, primary, Lu, Li-Ming, primary, Asada, Keiichi, primary, Han, Johnson C. C., primary, Nishioka, Hiroaki, primary, Koyama, Shoko, primary, Huang, Chih-Wei L., primary, Lin, Lupin C. C., primary, Liu, Kuan-Yu, primary, Yu, Chen-Yu, primary, Chen, Ming-Tang, primary, Ho, Paul T. P., primary, Kubo, Derek Y., primary, Srinivasan, Ranjani, primary, Bower, Geoffrey C., primary, Inoue, Makoto, primary, Bintley, Dan, primary, Friberg, Per, primary, Berthold, Ryan M., primary, Walther, Craig A., primary, Dempsey, Jessica T., primary, Weintroub, Jonathan, primary, Young, André, primary, Young, Ken, primary, Patel, Nimesh A., primary, Koch, Patrick M., primary, Meyer-Zhao, Zheng, primary, Byun, Do-Young, primary, Algaba Marcos, Juan-Carlos, primary, Chang, Shu-Hao, primary, Chen, Chung-Chen, primary, Chilson, Ryan, primary, Huang, Yau-De, primary, Jiang, Homin, primary, Liu, Ching-Tang, primary, Martin-Cocher, Pierre, primary, Nakamura, Masanori, primary, Nystrom, George, primary, Oshiro, Peter, primary, Pu, Hung-Yi, primary, Raffin, Philippe, primary, Shaw, Paul, primary, Snow, Williams, primary, Wei, Ta-Shun, primary, Sridharan, T. K., primary, Doeleman, Sheperd S., primary, Brissenden, Roger, primary, Ogawa, Hideo, primary, Kimura, Kimihiro, primary, Hasegawa, Yutaka, primary, Norton, Timothy J., primary, Allardi, Alex, primary, and Hao, Jinchi, primary
Published: 2018
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48. Commissioning of Nāmakanui on the JCMT

Author: Zmuidzinas, Jonas, Gao, Jian-Rong, Mizuno, Izumi, Friberg, Per, Berthold, Ryan, Parsons, Harriet, Han, Chih-Chiang, Acohido, Alexis, Bell, Graham, Berry, David, Bintley, Dan, Chen, Ming-Tang, Clark, Alyssa, Cookson, Jamie, DeMattos, Vernon, Dempsey, Jessica, Fleck, Jason, Fu, Kuo-chieh, Fuchs, Miriam, Graves, Sarah, Ho, Paul, Hsu, Sung-Po, Huang, YauDe, Jiang, Xue-Jian, Kubo, Derek, Kuroda, John, Li, Shaoliang, Mairs, Steve, Matulonis, Callie, Neil, Mailani, Oliveira, Neal, Purves, Maren, Rawlings, Mark, Shih, Ya-Che, Silva, Kevin, Sison, Ed, Smith, Patrice, Srinivasan, Ranjani, Stahm, William, Tetarenko, Alexandra J., Torne, Pablo, Walther, Craig, Wang, Chao-Ching, and Wei, Ta-Shun
Published: 2020
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49. Control and monitoring software for the Greenland Telescope

Author: Guzman, Juan C., Ibsen, Jorge, Huang, Chih-Wei Locutus, Matsushita, Satoki, Patel, Nimesh A., Srinivasan, Ranjani, Asada, Keiichi, Bower, Geoffrey, Chang, Shu-Hao, Chen, Chung-Cheng, Chen, Ming-Tang, Chilson, Ryan, Han, Chih-Chiang, Ho, Paul T. P., Huang, Yau-De, Inoue, Makoto, Jiang, Homin, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kubo, Derek Y., Kuo, Cheng-Yu, Li, Chao-Te, Liu, Ching-Tang, Liu, Kuan-Yu, Lo, Wen-Ping, Martin-Cocher, Pierre, Nakamura, Masanori, Norton, Timothy J., Nystrom, George, Oshiro, Peter, Park, Jongho, Pu, Hung-Yi, Raffin, Philippe, Rao, Ramprasad, Romero-Cañizales, Cristina, Shaw, Paul, Sridharan, T. K., Wei, Ta-Shun, and Yu, Chen-Yu
Published: 2020
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50. Status of scientific commissioning of the Greenland Telescope

Author: Marshall, Heather K., Spyromilio, Jason, Usuda, Tomonori, Koay, Jun Yi, Matsushita, Satoki, Asada, Keiichi, Patel, Nimesh A., Huang, Chih-Wei L., Bower, Geoffrey, Chang, Shu-Hao, Chen, Ming-Tang, Chen, Chung-Cheng, Chilson, Ryan, Han, Chih-Chiang, Ho, Paul T. P., Huang, Yau-De, Inoue, Makoto, Jiang, Homin, Koch, Patrick M., Koyama, Shoko, Kuo, Cheng-Yu, Kubo, Derek, Li, Chao-Te, Liu, Ching-Tang, Liu, Kuan-Yu, Lo, Wen-Ping, Martin-Cocher, Pierre, Nakamura, Masanori, Norton, Timothy J., Nystrom, George, Oshiro, Peter, Park, Jongho, Pu, Hung-Yi, Raffin, Philippe, Rao, Ramprasad, Romero-Canizales, Cristina, Shaw, Paul, Sridharan, Tirupati K., Srinivasan, Ranjani, Wei, Ta-Shun, and Yu, Chen-Yu
Published: 2020
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