Keiichi Asada

Institute of Astronomy and Astrophysics, Academia Sinica — Taiwan

Physics and Astronomy · Physical Sciences

45h-index20.0kcitations229works13.42yr avg
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Research Topics

Astrophysics and Cosmic Phenomena(146), Astrophysical Phenomena and Observations(95), Radio Astronomy Observations and Technology(72), Gamma-ray bursts and supernovae(49), Pulsars and Gravitational Waves Research(42)

Publications229 total

Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations
arXiv (Cornell University)·2025Open Access
Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign
Astronomy and Astrophysics·2025Open Access
Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations
Astronomy and Astrophysics·2025· 1 citedOpen Access
Monitoring of 3C 286 with ALMA, IRAM, and SMA from 2006 to 2025: Stability, Synchrotron Ages, and Frequency-dependent Polarization Attributed to Core-shift
The Astrophysical Journal·2025Open Access
Helical Magnetic Field in the Acceleration--Collimation Zone of the M87 Jet
arXiv (Cornell University)·2025Open Access
Spatially resolved polarization swings in the supermassive binary black hole candidate OJ 287 with first Event Horizon Telescope observations
Astronomy and Astrophysics·2025Open Access
Monitoring of 3C 286 with ALMA, IRAM, and SMA from 2006 to 2025: Stability, Synchrotron Ages, and Frequency-Dependent Polarization Attributed to Core-Shift
arXiv (Cornell University)·2025Open Access
Constraining Active Galactic Nucleus Jets with Spectrum and Core Shift: The Case of M87
The Astrophysical Journal·2025Open Access
Horizon-scale variability of M87* from 2017–2021 EHT observations
Astronomy and Astrophysics·2025· 2 citedOpen Access
Jet Collimation Profile of the Low-luminosity Active Galactic Nucleus M84: Insight into the Jet Formation in the Low-accretion Regime
The Astrophysical Journal·2025Open Access
Constraining Active Galactic Nucleus Jets with Spectrum and Core Shift: The Case of M87
arXiv (Cornell University)·2025Open Access
Origin of the ring ellipticity in the black hole images of M87<sup>*</sup>
Astronomy and Astrophysics·2025Open Access
First polarization study of the M87 jet and active galactic nuclei at submillimeter wavelengths with ALMA
Astronomy and Astrophysics·2025· 5 citedOpen Access
A multifrequency study of sub-parsec jets with the Event Horizon Telescope
Astronomy and Astrophysics·2025· 9 citedOpen Access
A multi-frequency study of sub-parsec jets with the Event Horizon Telescope
arXiv (Cornell University)·2025Open Access
The persistent shadow of the supermassive black hole of M87
Astronomy and Astrophysics·2025· 18 citedOpen Access
Demographics of black holes at $&lt;$100 R$_{\rm g}$ scales: accretion flows, jets, and shadows
arXiv (Cornell University)·2024Open Access
M 87: a cosmic laboratory for deciphering black hole accretion and jet formation
The Astronomy and Astrophysics Review·2024· 14 citedOpen Access
The putative center in NGC 1052
Astronomy and Astrophysics·2024· 8 citedOpen Access
Discovery of Limb Brightening in the Parsec-scale Jet of NGC 315 through Global Very Long Baseline Interferometry Observations and Its Implications for Jet Models
The Astrophysical Journal Letters·2024· 12 citedOpen Access
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Frequent Co-authors

Xiaopeng Cheng(38), Kazunori Akiyama(35), Kazuhiro Hada(35), Wu Jiang(33), G. Crew(31), Per Friberg(31), Geoffrey C. Bower(30), Avery E. Broderick(30), Vincent L. Fish(30), Mark Gurwell(30), W. Alef(29), Lindy Blackburn(29), Christiaan D. Brinkerink(29), Andrew Chael(29), Yuzhu Cui(29), Sheperd S. Doeleman(29), Paul T. P. Ho(29), Mareki Honma(29), Mislav Baloković(28), Dan Bintley(28)