List of works - Kazunori Akiyama

230 GHz VLBI OBSERVATIONS OF M87: EVENT‐HORIZON‐SCALE STRUCTURE DURING AN ENHANCED VERY‐HIGH‐ENERGY $\gamma $‐RAY STATE IN 2012 ⬇️

scientific article published in the Astrophysical Journal

A Search for Pulsars around Sgr A* in the First Event Horizon Telescope Data Set

scientific article published on 29 November 2023

A Universal Power-law Prescription for Variability from Synthetic Images of Black Hole Accretion Flows

scientific article published in May 2022

A comparative study of amplitude calibrations for the East Asia VLBI Network: A priori and template spectrum methods

article

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

ALMA Continuum Spectrum of the M87 Nucleus

Accelerating cross-validation with total variation and its application to super-resolution imaging.

scientific article published on 7 December 2017

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

scholarly article

Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI

scientific article published in May 2022

Comparison of Polarized Radiative Transfer Codes Used by the EHT Collaboration

scientific article published in June 2023

Constraints on black-hole charges with the 2017 EHT observations of M87*

scientific article published on 20 May 2021

Detection of Intrinsic Source Structure at ∼3 Schwarzschild Radii with Millimeter-VLBI Observations of SAGITTARIUS A*

scientific article published in the Astrophysical Journal

Dynamical Imaging with Interferometry

scholarly article

EVN observations of HESS J1943+213: evidence for an extreme TeV BL Lac object ⬇️

Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

scientific article published in August 2020

Event Horizon Telescope observations of the jet launching and collimation in Centaurus A

scientific article published on 19 July 2021

Filamentary structures as the origin of blazar jet radio variability

scientific article published on 26 October 2023

Fine-scale structure of the quasar 3C 279 measured with 1.3 mm very long baseline interferometry ⬇️

scientific article published in the Astrophysical Journal

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

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. II. Array and Instrumentation ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. III. Data Processing and Calibration ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization

scientific article published in November 2023

First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. VII. Polarization of the Ring

scientific article published in March 2021

First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

scientific article published in March 2021

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

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. VII. Polarization of the Ring

scientific article published on 27 March 2024

First Sagittarius A* Event Horizon Telescope Results. VIII. Physical Interpretation of the Polarized Ring

scientific article published on 27 March 2024

Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

scientific article published on 01 October 2020

High-sensitivity 86 GHz (3.5 mm) VLBI observations of M87: deep imaging of the jet base at a resolution of 10 Schwarzschild radii ⬇️

scholarly article

Imaging black holes with sparse modeling

scholarly article by Mareki Honma et al published March 2016 in Journal of Physics: Conference Series

Imaging the Schwarzschild-radius-scale Structure of M87 with the Event Horizon Telescope Using Sparse Modeling ⬇️

scientific article published in the Astrophysical Journal

Interferometric Imaging Directly with Closure Phases and Closure Amplitudes

Interstellar scintillation and the radio counterpart of the fast radio burst FRB 150418 ⬇️

Micro-arcsecond structure of Sagittarius A∗ revealed by high-sensitivity 86 GHz VLBI observations

scholarly article

Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign

scientific article published in May 2022

Millimeter/Submillimeter VLBI with a Next Generation Large Radio Telescope in the Atacama Desert

scientific article published in 2022

Modeling seven years of event horizon telescope observations with radiatively inefficient accretion flow models ⬇️

scholarly article

Monitoring the Morphology of M87* in 2009–2017 with the Event Horizon Telescope

scientific article published in September 2020

Multi-Epoch VERA Observations of Sagittarius A*. I. Images and Structural Variability

scientific article

Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope

PRECL: A new method for interferometry imaging from closure phase ⬇️

Parabolic Jets from the Spinning Black Hole in M87

scholarly article by Masanori Nakamura et al published 4 December 2018 in The Astrophysical Journal

Persistent asymmetric structure of Sagittarius A* on event horizon scales ⬇️

scientific article published in the Astrophysical Journal

Pilot KaVA monitoring on the M 87 jet: Confirming the inner jet structure and superluminal motions at sub-pc scales

scientific article published in January 2017

Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes

scientific article published in November 2023

Polarimetric Properties of Event Horizon Telescope Targets from ALMA

scientific article published in March 2021

Probing the precise location of the radio core in the TeV blazar Mrk 501 with VERA at 43 GHz ⬇️

Resolved magnetic-field structure and variability near the event horizon of Sagittarius A* ⬇️

scientific article

Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope

scientific article published in 2022

Selective Dynamical Imaging of Interferometric Data

scientific article published in May 2022

Super-resolution imaging with radio interferometry using sparse modeling

scholarly article

Superresolution Full-polarimetric Imaging for Radio Interferometry with Sparse Modeling ⬇️

scientific article published in Astronomical Journal

Superresolution Interferometric Imaging with Sparse Modeling Using Total Squared Variation: Application to Imaging the Black Hole Shadow

scholarly article by Kazuki Kuramochi et al published 4 May 2018 in The Astrophysical Journal

THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope

scientific article published in July 2020

The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project

scientific article published in August 2019

The Event Horizon Telescope Image of the Quasar NRAO 530

scientific article published in February 2023

The Global Jet Structure of the Archetypical Quasar 3C 273

The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole

scientific article published in May 2021

The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths

scientific article published in the Astrophysical Journal

The Variability of the Black Hole Image in M87 at the Dynamical Timescale

scientific article published in January 2022

The effects of accretion flow dynamics on the black hole shadow of Sagittarius A* ⬇️

scholarly article by Hung-Yi Pu et al published 20 October 2016 in The Astrophysical Journal

The persistent shadow of the supermassive black hole of M87: I. Observations, calibration, imaging, and analysis

scientific article published in January 2024

The persistent shadow of the supermassive black hole of M87: II. Model comparisons and theoretical interpretations

scientific article published in January 2025

The putative center in NGC 1052

scientific article published in December 2024

Unraveling Twisty Linear Polarization Morphologies in Black Hole Images

scientific article published in June 2023

VERA monitoring of the radio jet 3C 84 in the period of 2007–2013: Detection of non-linear motion

scientific article

VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability ⬇️

scientific article

Verification of Radiative Transfer Schemes for the EHT

scientific article published on 13 July 2020

List of works by Kazunori Akiyama

230 GHz VLBI OBSERVATIONS OF M87: EVENT‐HORIZON‐SCALE STRUCTURE DURING AN ENHANCED VERY‐HIGH‐ENERGY $\gamma $‐RAY STATE IN 2012 ⬇️

A Search for Pulsars around Sgr A* in the First Event Horizon Telescope Data Set

A Universal Power-law Prescription for Variability from Synthetic Images of Black Hole Accretion Flows

A comparative study of amplitude calibrations for the East Asia VLBI Network: A priori and template spectrum methods

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

ALMA Continuum Spectrum of the M87 Nucleus

Accelerating cross-validation with total variation and its application to super-resolution imaging.

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI

Comparison of Polarized Radiative Transfer Codes Used by the EHT Collaboration

Constraints on black-hole charges with the 2017 EHT observations of M87*

Detection of Intrinsic Source Structure at ∼3 Schwarzschild Radii with Millimeter-VLBI Observations of SAGITTARIUS A*

Dynamical Imaging with Interferometry

EVN observations of HESS J1943+213: evidence for an extreme TeV BL Lac object ⬇️

Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

Event Horizon Telescope observations of the jet launching and collimation in Centaurus A

Filamentary structures as the origin of blazar jet radio variability

Fine-scale structure of the quasar 3C 279 measured with 1.3 mm very long baseline interferometry ⬇️

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

First M87 Event Horizon Telescope Results. II. Array and Instrumentation ⬇️

First M87 Event Horizon Telescope Results. III. Data Processing and Calibration ⬇️

First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole ⬇️

First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization

First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring ⬇️

First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole ⬇️

First M87 Event Horizon Telescope Results. VII. Polarization of the Ring

First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

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

First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole

First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass

First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole

First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric

First Sagittarius A* Event Horizon Telescope Results. VII. Polarization of the Ring

First Sagittarius A* Event Horizon Telescope Results. VIII. Physical Interpretation of the Polarized Ring

Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

High-sensitivity 86 GHz (3.5 mm) VLBI observations of M87: deep imaging of the jet base at a resolution of 10 Schwarzschild radii ⬇️

Imaging black holes with sparse modeling

Imaging the Schwarzschild-radius-scale Structure of M87 with the Event Horizon Telescope Using Sparse Modeling ⬇️

Interferometric Imaging Directly with Closure Phases and Closure Amplitudes

Interstellar scintillation and the radio counterpart of the fast radio burst FRB 150418 ⬇️

Micro-arcsecond structure of Sagittarius A∗ revealed by high-sensitivity 86 GHz VLBI observations

Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign

Millimeter/Submillimeter VLBI with a Next Generation Large Radio Telescope in the Atacama Desert

Modeling seven years of event horizon telescope observations with radiatively inefficient accretion flow models ⬇️

Monitoring the Morphology of M87* in 2009–2017 with the Event Horizon Telescope

Multi-Epoch VERA Observations of Sagittarius A*. I. Images and Structural Variability

Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope

PRECL: A new method for interferometry imaging from closure phase ⬇️

Parabolic Jets from the Spinning Black Hole in M87

Persistent asymmetric structure of Sagittarius A* on event horizon scales ⬇️

Pilot KaVA monitoring on the M 87 jet: Confirming the inner jet structure and superluminal motions at sub-pc scales

Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes

Polarimetric Properties of Event Horizon Telescope Targets from ALMA

Probing the precise location of the radio core in the TeV blazar Mrk 501 with VERA at 43 GHz ⬇️

Resolved magnetic-field structure and variability near the event horizon of Sagittarius A* ⬇️

Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope

Selective Dynamical Imaging of Interferometric Data

Super-resolution imaging with radio interferometry using sparse modeling

Superresolution Full-polarimetric Imaging for Radio Interferometry with Sparse Modeling ⬇️

Superresolution Interferometric Imaging with Sparse Modeling Using Total Squared Variation: Application to Imaging the Black Hole Shadow

THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope

The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project

The Event Horizon Telescope Image of the Quasar NRAO 530

The Global Jet Structure of the Archetypical Quasar 3C 273

The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole

The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths

The Variability of the Black Hole Image in M87 at the Dynamical Timescale

The effects of accretion flow dynamics on the black hole shadow of Sagittarius A* ⬇️

The persistent shadow of the supermassive black hole of M87: I. Observations, calibration, imaging, and analysis

The persistent shadow of the supermassive black hole of M87: II. Model comparisons and theoretical interpretations

The putative center in NGC 1052

Unraveling Twisty Linear Polarization Morphologies in Black Hole Images

VERA monitoring of the radio jet 3C 84 in the period of 2007–2013: Detection of non-linear motion

VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability ⬇️

Verification of Radiative Transfer Schemes for the EHT