KH
Kazuhiro Hada
astro-ph.HEastro-ph.GAastro-ph.IMastro-ph.COgr-qcastro-ph.SRhep-phphysics.flu-dynphysics.plasm-ph
On Valency
published · living versionsW_zj5juagt·v1 · currentpublished
The Black Hole Explorer: Motivation and Vision
with Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin, Bryan Bilyeu +63
1 version
Preprints & journals
100 papers in the corpus · 2011–2026First Trigonometric Parallax Measurements with the KVN and VERA Array (KaVA)2609.25300v1 · Nobuyuki Sakai, Daisuke Sakai, Noriyuki Kawaguchi et al.2026 · 0 citationsPubl. Astron. Soc. Japan (2026), psag117
Black Hole Explorer Mission Development in Japan2608.00890v1 · Kazunori Akiyama, Mareki Honma, Akihiro Doi et al.2026 · 0 citationsSPIE Astronomical Telescopes + Instrumentation, 2026
Dynamics and geometry of the inner sub-parsec-scale jet in 3C 279 observed with the Event Horizon Telescope2607.16104v1 · Hendrik Mueller, Sebastiano D. von Fellenberg, Ai-Ling Zeng et al.2026 · 0 citationsarXiv
Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign2606.25868v2 · G. Principe, J. C. Algaba, E. Aviano et al.2026 · 0 citationsA&A, 712, A224 (2026)
A Weak Fe K Emission Line in the Broad-Line Radio Galaxy 3C 111 Observed with XRISM: An Ionized Wind Absorption Feature?2605.22388v1 · Kouichi Hagino, Motoki Kino, Lukasz Stawarz et al.2026 · 0 citationsarXiv
A VLBA-resolved Jet Associated with Super-Eddington Accretion in a Radio-loud Quasar at 2605.15555v2 · Sakiko Obuchi, Ingyin Zaw, Kazuhiro Hada et al.2026 · 1 citationarXiv
Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign2604.10287v1 · Ezequiel Albentosa-Ruiz, Jasmin E. Washington, Nicola Marchili et al.2026 · 1 citationAstronomy & Astrophysics 708 (2026) A179
Verification of the Polarimetric Capability of the East Asia VLBI Network2603.25185v1 · Yunjeong Lee, Jongho Park, Do-Young Byun et al.2026 · 0 citationsarXiv
Transverse Oscillations and Wave Propagation in the Magnetically Dominated M87 Jet2603.02660v1 · Hyunwook Ro, Motoki Kino, Kazuhiro Hada et al.2026 · 1 citationarXiv
Expanding the Horizon of Black Hole Imaging with AtLAST2602.04666v1 · Kazunori Akiyama, Mariafelicia De Laurentis, Ziri Younsi et al.2026 · 0 citationsarXiv
Locating the missing large-scale emission in the jet of M87* with short EHT baselines2601.13356v1 · Boris Georgiev, Paul Tiede, Sebastiano D. von Fellenberg et al.2026 · 1 citationA&A 709, A26 (2026)
Ring Asymmetry and Spin in M87*2601.00394v2 · Vadim Bernshteyn, Nicholas S. Conroy, Michi Baubock et al.2026 · 5 citationsApJ 1000 231 (2026)
Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations2512.08970v1 · Saurabh, Hendrik Muller, Sebastiano D. von Fellenberg et al.2025 · 4 citationsarXiv
Helical Magnetic Field in the Acceleration--Collimation Zone of the M87 Jet2511.13008v1 · Jongho Park, Kazuya Takahashi, Kenji Toma et al.2025 · 6 citationsarXiv
Discovery of an X-ray Luminous Radio-Loud Quasar at : A Possible Transitional Super-Eddington Phase2511.05029v1 · Sakiko Obuchi, Kohei Ichikawa, Satoshi Yamada et al.2025 · 6 citationsarXiv
Constraining the Mass of a Hypothetical Secondary Black Hole in M87 with the NANOGrav 15-Year Data Set2506.12313v1 · Motoki Kino, Masahiro Nagashima, Hyunwook Ro et al.2025 · 0 citationsarXiv
Origin of the ring ellipticity in the black hole images of M87*2505.10333v1 · Rohan Dahale, Ilje Cho, Kotaro Moriyama et al.2025 · 4 citationsA&A 699, A279 (2025)
The putative center in NGC 10522501.08685v1 · Anne-Kathrin Baczko, Matthias Kadler, Eduardo Ros et al.2025 · 10 citationsA&A, 692, A205 (2024)
First mid-infrared detection and modeling of a flare from Sgr A*2501.07415v1 · Sebastiano D. von Fellenberg, Tamojeet Roychowdhury, Joseph M. Michail et al.2025 · 21 citationsarXiv
A multi-frequency study of sub-parsec jets with the Event Horizon Telescope2501.05518v1 · Jan Roder, Maciek Wielgus, Andrei P. Lobanov et al.2025 · 13 citationsA&A 695, A233 (2025)
Demographics of black holes at $<_{\rm g}$ scales: accretion flows, jets, and shadows2412.20276v1 · Dhanya G. Nair, Neil M. Nagar, Venkatessh Ramakrishnan et al.2024 · 2 citationsarXiv
M87: a cosmic laboratory for deciphering black hole accretion and jet formation2412.07083v1 · Kazuhiro Hada, Keiichi Asada, Masanori Nakamura et al.2024 · 24 citationsThe Astronomy and Astrophysics Review, 32, 5 (2024)
First Very Long Baseline Interferometry Detections at 870{\mu}m2410.07453v1 · Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada et al.2024 · 33 citationsThe Astronomical Journal, Volume 168, Issue 3, id.130, 19 pp. 2024
Discovery of Limb Brightening in the Parsec-scale Jet of NGC 315 through Global Very Long Baseline Interferometry Observations and Its Implications for Jet Models2408.09069v2 · Jongho Park, Guang-Yao Zhao, Masanori Nakamura et al.2024 · 17 citationsarXiv
Mapping the distribution of the magnetic field strength along the NGC 315 jet2407.18444v1 · Motoki Kino, Hyunwook Ro, Masaaki Takahashi et al.2024 · 5 citationsarXiv
Black Hole Spacetime and Properties of Accretion Flows and Jets Probed by Black Hole Explorer: Science Cases Proposed by BHEX Japan Team2406.09995v1 · Tomohisa Kawashima, Yuh Tsunetoe, Ken Ohsuga et al.2024 · 2 citationsarXiv
The Japanese Vision for the Black Hole Explorer Mission2406.09516v1 · Kazunori Akiyama, Kotaro Niinuma, Kazuhiro Hada et al.2024 · 5 citationsProc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130922E, 2024 August 23
The Black Hole Explorer: Motivation and Vision2406.12917v1 · Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin et al.2024 · 91 citationsProceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130922D (2024)on Valency
Jet Collimation and Acceleration in the Flat Spectrum Radio Quasar 1928+7382405.03365v1 · Kunwoo Yi, Jongho Park, Masanori Nakamura et al.2024 · 11 citationsA&A 688, A94 (2024)
Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode2404.17623v3 · J. C. Algaba, M. Balokovic, S. Chandra et al.2024 · 35 citationsA&A 692, A140 (2024)
Ordered magnetic fields around the 3C 84 central black hole2402.00927v1 · G. F. Paraschos, J.-Y. Kim, M. Wielgus et al.2024 · 27 citationsIssue: A&A Volume 682, February 2024; Article number: L3; Number of pages: 15
Trigonometric parallax and proper motion of Sagittarius A* measured by VERA using the new broad-band back-end system OCTAVE-DAS2401.02312v1 · Tomoaki Oyama, Takumi Nagayama, Aya Yamauchi et al.2024 · 7 citationsarXiv
Precessing jet nozzle connecting to a spinning black hole in M87.37758892 · Cui, Yuzhu, Hada, Kazuhiro, Kawashima, Tomohisa et al.2023 · 113 citationsNature. 2023;621(7980):711-715
A search for pulsars around Sgr A* in the first Event Horizon Telescope dataset2308.15381v1 · Pablo Torne, Kuo Liu, Ralph P. Eatough et al.2023 · 15 citationsarXiv
Probing the Heart of Active Narrow-line Seyfert 1 Galaxies with VERA Wideband Polarimetry2306.03139v1 · Mieko Takamura, Kazuhiro Hada, Mareki Honma et al.2023 · 6 citationsarXiv
RadioAstron Space VLBI Imaging of the jet in M87: I. Detection of high brightness temperature at 22 GHz2304.09816v1 · Jae-Young Kim, Tuomas Savolainen, Petr Voitsik et al.2023 · 23 citationsApJ 952 (2023) 34
A ring-like accretion structure in M87 connecting its black hole and jet.37100940 · Lu, Ru-Sen, Asada, Keiichi, Krichbaum, Thomas P et al.2023 · 155 citationsNature. 2023;616(7958):686-690
The Past and Future of East Asia to Italy: Nearly Global VLBI2303.14518v1 · Gabriele Giovannini, Yuzhu Cui, Kazuhiro Hada et al.2023 · 4 citationsGalaxies 2023 11(2) 49
Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration2303.12004v2 · Cora Prather, Jason Dexter, Monika Moscibrodzka et al.2023 · 24 citationsApJ, 950, 35, 2023
Spectral analysis of a parsec-scale jet in M87: Observational constraint on the magnetic field strengths in the jet2303.01014v1 · Hyunwook Ro, Motoki Kino, Bong Won Sohn et al.2023 · 25 citationsA&A 673, A159 (2023)
Super-Resolved Image of M87 Observed with East Asian VLBI Network2303.01048v1 · Fumie Tazaki, Yuzhu Cui, Kazuhiro Hada et al.2023 · 5 citationsGalaxies 2023, 11(2), 39
Transverse Oscillations of the M87 Jet Revealed by KaVA Observations2303.01106v1 · Hyunwook Ro, Kunwoo Yi, Yuzhu Cui et al.2023 · 12 citationsGalaxies 2023, 11(1), 33
Demonstration of Ultrawideband Polarimetry Using VLBI Exploration of Radio Astrometry (VERA)2212.10144v1 · Yoshiaki Hagiwara, Kazuhiro Hada, Mieko Takamura et al.2022 · 6 citationsGalaxies 2022, 10(6), 114
Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)2212.07040v1 · Kazunori Akiyama, Juan-Carlos Algaba, Tao An et al.2022 · 16 citationsGalaxies 2022, 10(6), 113
Millimeter/submillimeter VLBI with a Next Generation Large Radio Telescope in the Atacama Desert2212.05118v3 · Kazunori Akiyama, Jens Kauffmann, Lynn D. Matthews et al.2022 · 8 citationsarXiv
Multi-frequency VLBI Observations of the M 84 Inner Jet/Counterjet2211.08602v1 · Xuezheng Wang, Wu Jiang, Zhiqiang Shen et al.2022 · 3 citationsarXiv
Sciences with Thai National Radio Telescope2210.04926v1 · Phrudth Jaroenjittichai, Koichiro Sugiyama, Busaba H. Kramer et al.2022 · 4 citationsarXiv
Implications from the velocity profile of the M87 jet: a possibility of a slowly rotating black hole magnetosphere2209.07264v1 · Motoki Kino, Masaaki Takahashi, Tomohisa Kawashima et al.2022 · 21 citationsarXiv
Magnetic Reconnection in Black-Hole Magnetospheres: Lepton Loading into Jets, Superluminal Radio Blobs, and Multi-wavelength Flares2208.01882v2 · Shigeo S. Kimura, Kenji Toma, Hirofumi Noda et al.2022 · 22 citationsarXiv
Collimation of the relativistic jet in the quasar 3C 2732112.12233v2 · Hiroki Okino, Kazunori Akiyama, Keiichi Asada et al.2021 · 37 citationsarXiv
Career total: 210 works. 100 are in this corpus.Showing the 50 most recent.
Profile built from the corpus for this byline.
Author records are still filling in while the Hub is in alpha. If this is your page, you'll be able to claim it soon. Spot a mistake? Tell us.