activity
20152026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 12.3k across the 56 of their papers we have counts for

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12 papers · 1 filter

astro-ph.IM2026

Black Hole Explorer Mission Development in Japan

Kazunori Akiyama, Mareki Honma, Akihiro Doi +21

The Black Hole Explorer (BHEX) is a next-generation space very-long-baseline interferometry (VLBI) mission concept that will extend existing ground-based millimeter/submillimeter V…

astro-ph.IM2026

Expanding the Horizon of Black Hole Imaging with AtLAST

Kazunori Akiyama, Mariafelicia De Laurentis, Ziri Younsi +8

The Event Horizon Telescope (EHT) has directly resolved and imaged two supermassive black holes and opening a new window on black hole physics. However, the current array is limite…

astro-ph.IM2024★ 30 cited

First Very Long Baseline Interferometry Detections at 870μm

Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada +276

The first very long baseline interferometry (VLBI) detections at 870m wavelength (345GHz frequency) are reported, achieving the highest diffraction-limited angular resolutio…

astro-ph.IM2024★ 5 cited

The Japanese Vision for the Black Hole Explorer Mission

Kazunori Akiyama, Kotaro Niinuma, Kazuhiro Hada +43

The Black Hole Explorer (BHEX) is a next-generation space very long baseline interferometry (VLBI) mission concept that will extend the ground-based millimeter/submillimeter arrays…

astro-ph.IM2023

Absolute Flux Density Calibration of the Greenland Telescope Data for Event Horizon Telescope Observations

J. Y. Koay, K. Asada, S. Matsushita +35

Starting from the observing campaign in April 2018, the Greenland Telescope (GLT) has been added as a new station of the Event Horizon Telescope (EHT) array. Visibilities on baseli…

astro-ph.IM2023★ 1 cited

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

Ming-Tang Chen, Keiichi Asada, Satoki Matsushita +51

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…