Kazuhiro Hada

Identifiers

• name variant Kazuhiro Hada 0.60 · backfill

Papers (82)

1. A Weak Fe K$\beta$ Emission Line in the Broad-Line Radio Galaxy 3C 111 Observed with XRISM: An Ionized Wind Absorption Feature? astro-ph.HE · 2026 · author #5
2. A VLBA-resolved Jet Associated with Super-Eddington Accretion in a Radio-loud Quasar at $z=3.4$ astro-ph.GA · 2026 · author #3
3. Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign astro-ph.GA · 2026 · author #95
4. Locating the missing large-scale emission in the jet of M87* with short EHT baselines astro-ph.HE · 2026 · author #95
5. Jet Collimation Profile of Low-Luminosity AGN M84: Insight into the Jet Formation in the Low Accretion Regime astro-ph.HE · 2025 · author #2
6. Sub-Parsec Acceleration and Collimation of NGC 4261's Twin Jets astro-ph.GA · 2025 · author #3
7. Constraining the Mass of a Hypothetical Secondary Black Hole in M87 with the NANOGrav 15-Year Data Set astro-ph.HE · 2025 · author #5
8. Origin of the ring ellipticity in the black hole images of M87* astro-ph.HE · 2025 · author #93
9. The putative center in NGC 1052 astro-ph.HE · 2025 · author #95
10. First mid-infrared detection and modeling of a flare from Sgr A* astro-ph.HE · 2025 · author #22
11. A multi-frequency study of sub-parsec jets with the Event Horizon Telescope astro-ph.HE · 2025 · author #108
12. Demographics of black holes at $<$100 R$_{\rm g}$ scales: accretion flows, jets, and shadows astro-ph.GA · 2024 · author #41
13. M87: a cosmic laboratory for deciphering black hole accretion and jet formation astro-ph.HE · 2024 · author #1
14. First Very Long Baseline Interferometry Detections at 870{\mu}m astro-ph.IM · 2024 · author #110
15. 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 astro-ph.HE · 2024 · author #11
16. Mapping the distribution of the magnetic field strength along the NGC 315 jet astro-ph.HE · 2024 · author #6
17. Black Hole Spacetime and Properties of Accretion Flows and Jets Probed by Black Hole Explorer: Science Cases Proposed by BHEX Japan Team astro-ph.HE · 2024 · author #9
18. The Japanese Vision for the Black Hole Explorer Mission astro-ph.IM · 2024 · author #3
19. The Black Hole Explorer: Motivation and Vision astro-ph.IM · 2024 · author #25
20. Jet Collimation and Acceleration in the Flat Spectrum Radio Quasar 1928+738 astro-ph.HE · 2024 · author #4
21. Trigonometric parallax and proper motion of Sagittarius A* measured by VERA using the new broad-band back-end system OCTAVE-DAS astro-ph.GA · 2024 · author #8
22. Precessing jet nozzle connecting to a spinning black hole in M87 astro-ph.HE · 2023 · author #2
23. Probing the Heart of Active Narrow-line Seyfert 1 Galaxies with VERA Wideband Polarimetry astro-ph.HE · 2023 · author #2
24. A ring-like accretion structure in M87 connecting its black hole and jet astro-ph.HE · 2023 · author #9
25. RadioAstron Space VLBI Imaging of the jet in M87: I. Detection of high brightness temperature at 22 GHz astro-ph.GA · 2023 · author #16
26. The Past and Future of East Asia to Italy: Nearly Global VLBI astro-ph.GA · 2023 · author #3
27. Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration astro-ph.HE · 2023 · author #87
28. Transverse Oscillations of the M87 Jet Revealed by KaVA Observations astro-ph.HE · 2023 · author #5
29. Super-Resolved Image of M87 Observed with East Asian VLBI Network astro-ph.HE · 2023 · author #3
30. Spectral analysis of a parsec-scale jet in M87: Observational constraint on the magnetic field strengths in the jet astro-ph.HE · 2023 · author #4
31. Demonstration of Ultrawideband Polarimetry Using VLBI Exploration of Radio Astrometry (VERA) astro-ph.IM · 2022 · author #2
32. Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN) astro-ph.IM · 2022 · author #22
33. Millimeter/submillimeter VLBI with a Next Generation Large Radio Telescope in the Atacama Desert astro-ph.IM · 2022 · author #6
34. Multi-frequency VLBI Observations of the M 84 Inner Jet/Counterjet astro-ph.HE · 2022 · author #5
35. Sciences with Thai National Radio Telescope astro-ph.IM · 2022 · author #17
36. Implications from the velocity profile of the M87 jet: a possibility of a slowly rotating black hole magnetosphere astro-ph.HE · 2022 · author #5
37. Magnetic Reconnection in Black-Hole Magnetospheres: Lepton Loading into Jets, Superluminal Radio Blobs, and Multi-wavelength Flares astro-ph.HE · 2022 · author #4
38. Collimation of the relativistic jet in the quasar 3C 273 astro-ph.HE · 2021 · author #5
39. The Variability of the Black-Hole Image in M87 at the Dynamical Time Scale astro-ph.HE · 2021 · author #80
40. Morphological transition of the compact radio lobe in 3C84 via the strong jet-cloud collision astro-ph.HE · 2021 · author #9
41. A revised view of the linear polarization in the subparsec core of M87 at 7 mm astro-ph.HE · 2021 · author #6
42. Testing the magnetic flux paradigm for AGN radio loudness with a radio intermediate quasar astro-ph.HE · 2021 · author #3
43. Constraints on black-hole charges with the 2017 EHT observations of M87* gr-qc · 2021 · author #78
44. The Polarized Image of a Synchrotron Emitting Ring of Gas Orbiting a Black Hole astro-ph.HE · 2021 · author #79
45. East Asian VLBI Network Observations of Active Galactic Nuclei Jets: Imaging with KaVA+Tianma+Nanshan astro-ph.GA · 2021 · author #2
46. Jet collimation and acceleration in the giant radio galaxy NGC 315 astro-ph.HE · 2020 · author #2
47. Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole gr-qc · 2020 · author #56
48. Monitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope astro-ph.HE · 2020 · author #20
49. Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed Gamma-Ray Blazar JVAS B0218+357 astro-ph.GA · 2020 · author #1
50. The radio-loud narrow-line Seyfert 1 galaxy 1H 0323+342 in a galaxy merger astro-ph.GA · 2020 · author #4
51. The First VERA Astrometry Catalog astro-ph.GA · 2020 · author #10
52. East Asia VLBI Network observations of the TeV Gamma-Ray Burst 190114C astro-ph.HE · 2019 · author #7
53. Kinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification astro-ph.HE · 2019 · author #2
54. The Two-sided Jet Structures of NGC 1052 at Scales from 300 to $4 \times 10^7$ Schwarzschild Radii astro-ph.GA · 2019 · author #5
55. Jet Kinematics of the Quasar 4C +21.35 from Observations with the KaVA Very Long Baseline Interferometry Array astro-ph.GA · 2019 · author #7
56. Source-Frequency Phase-Referencing Observation of AGNs with KaVA Using Simultaneous Dual-Frequency Receiving astro-ph.IM · 2019 · author #17
57. Faraday rotation in the jet of M87 inside the Bondi radius: indication of winds from hot accretion flows confining the relativistic jet astro-ph.HE · 2018 · author #2
58. Parabolic Jets from the Spinning Black Hole in M87 astro-ph.HE · 2018 · author #3
59. Collimation, Acceleration and Recollimation Shock in the Jet of Gamma-Ray-emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy 1H 0323+342 astro-ph.HE · 2018 · author #1
60. Revealing the Nature of Blazar Radio Cores through Multi-Frequency Polarization Observations with the Korean VLBI Network astro-ph.HE · 2018 · author #12
61. A Recollimation Shock in a Stationary Jet Feature with Limb-brightening in the Gamma-ray Emitting Narrow-line Seyfert 1 Galaxy 1H 0323+342 astro-ph.GA · 2018 · author #2
62. Fast-spinning black holes inferred from symmetrically limb-brightened radio jets astro-ph.HE · 2018 · author #5
63. A New Solution to the Plasma Starved Event Horizon Magnetosphere: Application to the Forked Jet in M87 astro-ph.HE · 2018 · author #3
64. Pilot KaVA monitoring on the M87 jet: confirming the inner jet structure and superluminal motions at sub-pc scales astro-ph.HE · 2017 · author #1
65. PRECL: A new method for interferometry imaging from closure phase astro-ph.IM · 2016 · author #4
66. High-Sensitivity 86GHz (3.5mm) VLBI Observations of M87: Deep Imaging of the Jet Base at a 10 Schwarzschild-Radius Resolution astro-ph.HE · 2015 · author #1
67. Determination of Central Engine Position and Accretion Disk Structure in NGC 4261 by Core Shift Measurements astro-ph.HE · 2015 · author #6
68. The off-axis jet structure in Mrk 501 at mm-wavelengths astro-ph.HE · 2015 · author #6
69. 230 GHz VLBI observations of M87: event-horizon-scale structure at the enhanced very-high-energy $\rm \gamma$-ray state in 2012 astro-ph.HE · 2015 · author #7
70. Continuing EVN monitoring of HST-1 in the jet of M87 astro-ph.HE · 2015 · author #1
71. The Nuclear Structure of 3C84 with Space VLBI (RadioAstron) Observations astro-ph.HE · 2015 · author #6
72. VLBI observations of bright AGN jets with KVN and VERA Array (KaVA): Evaluation of Imaging Capability astro-ph.IM · 2014 · author #9
73. A sensitive study of the peculiar jet structure HST-1 in M87 astro-ph.HE · 2013 · author #5
74. Evidence for nuclear radio jet and its structure down to <100 Schwarzschild radii in the center of the Sombrero galaxy (M 104, NGC 4594) astro-ph.CO · 2013 · author #1
75. High-Angular-Resolution and High-Sensitivity Science Enabled by Beamformed ALMA astro-ph.IM · 2013 · author #21
76. Innermost collimation structure of the M87 jet down to ~ten Schwarzschild radii astro-ph.CO · 2013 · author #1
77. Nuclear Radio Jet from a Low-Luminosity Active Galactic Nucleus in NGC 4258 astro-ph.GA · 2013 · author #6
78. VLBI Imagings of Kilo-parsec Knot in 3C 380 astro-ph.HE · 2012 · author #4
79. VLBI Observations of the Jet in M87 During the Very-High-Energy Gamma-ray Flare in April 2010 astro-ph.HE · 2012 · author #1
80. GENJI Programme: Gamma-ray Emitting Notable AGN Monitoring by Japanese VLBI astro-ph.HE · 2012 · author #5
81. Nuclear Radio Continuum Emission of Low-Luminosity Active Galactic Nucleus NGC 4258 astro-ph.CO · 2011 · author #6
82. Suzaku observation of the giant radio galaxy 3C 326 astro-ph.HE · 2009 · author #6

Mentions

• 2506.13093 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2507.21241 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2505.10333 #93 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2506.12313 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2501.05518 #108 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2501.08685 #95 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2501.07415 #22 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2412.20276 #41 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2412.07083 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2406.12917 #25 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2410.07453 #110 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2408.09069 #11 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2406.09516 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2111.01317 #80 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2405.03365 #4 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2407.18444 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2406.09995 #9 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2401.02312 #8 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2310.09015 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2306.03139 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2304.09816 #16 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2303.12004 #87 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2303.01014 #4 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2304.13252 #9 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2303.14518 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2303.01106 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2303.01048 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2211.08602 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2212.10144 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2212.05118 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2212.07040 #22 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2112.12233 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2209.07264 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2210.04926 #17 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2208.01882 #4 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2107.13243 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2104.05525 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2110.11082 #9 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2106.01089 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2105.09343 #78 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2105.01804 #79 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2012.14154 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2010.01055 #56 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2009.11842 #20 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2009.00780 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2005.12510 #4 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 2002.03089 #10 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1911.03646 #7 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1911.02279 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1909.12510 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1904.02894 #7 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1903.11796 #17 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1812.08386 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1810.09963 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1802.00292 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1603.07078 #4 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1805.08299 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1805.04299 #12 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1801.03541 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1804.03776 #2 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1706.02066 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1210.2496 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1309.3519 #21 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1512.03783 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1510.00734 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1505.03545 #7 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1406.4356 #9 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1310.6312 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1310.0488 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1308.1411 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1301.4757 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1211.6124 #4 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1210.4942 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1505.04433 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1504.01808 #1 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1504.01516 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 0910.2467 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1106.2930 #6 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1510.00734 #6 · backfill · confidence 0.70 Kazuhiro Hada
• 1505.04433 #6 · backfill · confidence 0.70 Kazuhiro Hada
• 1505.03545 #7 · backfill · confidence 0.70 Kazuhiro Hada
• 1504.01808 #1 · backfill · confidence 0.70 Kazuhiro Hada
• 1504.01516 #6 · backfill · confidence 0.70 Kazuhiro Hada
• 1406.4356 #9 · backfill · confidence 0.70 Kazuhiro Hada
• 1310.6312 #5 · backfill · confidence 0.70 Kazuhiro Hada
• 1310.0488 #1 · backfill · confidence 0.70 Kazuhiro Hada
• 1309.3519 #21 · backfill · confidence 0.70 Kazuhiro Hada
• 1308.1411 #1 · backfill · confidence 0.70 Kazuhiro Hada
• 1301.4757 #6 · backfill · confidence 0.70 Kazuhiro Hada
• 1211.6124 #4 · backfill · confidence 0.70 Kazuhiro Hada
• 1210.4942 #1 · backfill · confidence 0.70 Kazuhiro Hada
• 1210.2496 #5 · backfill · confidence 0.70 Kazuhiro Hada
• 2605.22388 #5 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 1106.2930 #6 · backfill · confidence 0.70 Kazuhiro Hada
• 2605.15555 #3 · arxiv_oai · confidence 0.70 Kazuhiro Hada
• 0910.2467 #6 · backfill · confidence 0.70 Kazuhiro Hada

Frequent Coauthors

• Motoki Kino 52 shared papers
• Mareki Honma 41 shared papers
• Kazunori Akiyama 34 shared papers
• Hiroshi Nagai 31 shared papers
• Masanori Nakamura 30 shared papers
• Jongho Park 29 shared papers
• Keiichi Asada 29 shared papers
• Shoko Koyama 28 shared papers
• Fumie Tazaki 27 shared papers
• Bong Won Sohn 26 shared papers
• Yuzhu Cui 26 shared papers
• Sascha Trippe 23 shared papers
• Sang-Sung Lee 22 shared papers
• Akihiro Doi 21 shared papers
• Guang-Yao Zhao 21 shared papers
• Ilje Cho 21 shared papers
• Ru-Sen Lu 21 shared papers
• Taehyun Jung 21 shared papers
• Tomoaki Oyama 21 shared papers
• Wu Jiang 21 shared papers