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Akihiro Doi

Identifiers

  • name variant Akihiro Doi 0.60 · backfill

Papers (51)

  1. Multiphase Gas Structure in the Circumnuclear Region of NGC 5506 Observed with ALMA astro-ph.GA · 2026 · author #10
  2. Radio jet structures at ~100 parsec and larger scales of the $\gamma$-ray-emitting narrow-line Seyfert 1 galaxy PMN J0948+0022 astro-ph.GA · 2019 · author #1
  3. A Balloon-Borne Very Long Baseline Interferometry Experiment in the Stratosphere: Systems Design and Developments astro-ph.IM · 2018 · author #1
  4. Detection of Coronal Magnetic Activity in Nearby Active Supermassive Black Holes astro-ph.HE · 2018 · author #2
  5. Parabolic Jets from the Spinning Black Hole in M87 astro-ph.HE · 2018 · author #14
  6. 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 #2
  7. Searches for H$_2$O Masers toward Narrow-Line Seyfert 1 galaxies astro-ph.GA · 2018 · author #2
  8. 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 #1
  9. Disk-Jet Connection in Active Supermassive Black Holes in the Standard Accretion Disk Regime astro-ph.HE · 2017 · author #2
  10. High-frequency excess in the radio continuum spectrum of the type-1 Seyfert galaxy NGC 985 astro-ph.GA · 2016 · author #1
  11. Search for sub-millimeter H2O masers in active galaxies - the detection of a 321 GHz H2O maser in NGC4945 astro-ph.GA · 2016 · author #3
  12. A Radio Detection Survey of Narrow-Line Seyfert 1 Galaxies using Very-Long-Baseline Interferometry at 22 GHz astro-ph.HE · 2016 · author #1
  13. 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 #3
  14. Determination of Central Engine Position and Accretion Disk Structure in NGC 4261 by Core Shift Measurements astro-ph.HE · 2015 · author #2
  15. ALMA Observations of the Submillimeter Dense Molecular Gas Tracers in the Luminous Type-1 Active Nucleus of NGC 7469 astro-ph.GA · 2015 · author #4
  16. The off-axis jet structure in Mrk 501 at mm-wavelengths astro-ph.HE · 2015 · author #4
  17. Continuing EVN monitoring of HST-1 in the jet of M87 astro-ph.HE · 2015 · author #8
  18. A Fanaroff-Riley Type I Candidate in Narrow-Line Seyfert 1 Galaxy Mrk 1239 astro-ph.GA · 2014 · author #1
  19. Obscured Narrow-Line Seyfert 1 Galaxy Candidate Mrk 1388 with Nonthermal Jets astro-ph.GA · 2014 · author #1
  20. VLBI observations of bright AGN jets with KVN and VERA Array (KaVA): Evaluation of Imaging Capability astro-ph.IM · 2014 · author #17
  21. Variable optical polarization during high state in gamma-ray loud narrow line Seyfert 1 galaxy 1H 0323+342 astro-ph.GA · 2014 · author #7
  22. Discovery of Sub- to Superluminal Motions in the M87 Jet: An Implication of the Acceleration from Sub-relativistic to Relativistic Speeds astro-ph.HE · 2013 · author #3
  23. Observations of 6.7 GHz Methanol Masers with EAVN I: VLBI Images of the first Epoch of Observations astro-ph.SR · 2013 · author #23
  24. 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 #2
  25. Innermost collimation structure of the M87 jet down to ~ten Schwarzschild radii astro-ph.CO · 2013 · author #3
  26. Submillimeter ALMA Observations of the Dense Gas in the Low-Luminosity Type-1 Active Nucleus of NGC 1097 astro-ph.GA · 2013 · author #14
  27. VLBA Multi-frequency Polarimetric imaging of Radio-loud Broad Absorption Line Quasars astro-ph.HE · 2013 · author #2
  28. Submillimeter H2O Maser in Circinus Galaxy - A New Probe for the Circumnuclear Region of Active Galactic Nuclei astro-ph.GA · 2013 · author #3
  29. Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020+4320: Recently Restarted Jet Activity? astro-ph.HE · 2013 · author #1
  30. Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies astro-ph.GA · 2013 · author #1
  31. Nuclear Radio Jet from a Low-Luminosity Active Galactic Nucleus in NGC 4258 astro-ph.GA · 2013 · author #1
  32. VLBI Observations of the Jet in M87 During the Very-High-Energy Gamma-ray Flare in April 2010 astro-ph.HE · 2012 · author #4
  33. Kiloparsec-scale Radio Structures in Narrow-line Seyfert 1 Galaxies astro-ph.GA · 2012 · author #1
  34. Short-Term Variability of PKS1510-089 astro-ph.HE · 2012 · author #5
  35. VLBI and Single Dish Monitoring of 3C84 in the Period of 2009-2011 astro-ph.HE · 2012 · author #6
  36. Exploring the central sub-pc region of the \gamma-ray bright radio galaxy 3C 84 with the VLBA at 43 GHz in the period of 2002-2008 astro-ph.HE · 2011 · author #6
  37. Bursting Activity in a High-Mass Star-Forming Region G33.64-0.21 Observed with the 6.7 GHz Methanol Maser astro-ph.SR · 2011 · author #6
  38. Very Long Baseline Array Imaging of Parsec-scale Jet Structures in Radio-loud Narrow-line Seyfert 1 Galaxies astro-ph.CO · 2011 · author #1
  39. Millimeter Radio Continuum Emissions as the Activity of Super Massive Black Holes in Nearby Early-Type Galaxies and Low-Luminosity Active Galactic Nuclei astro-ph.CO · 2011 · author #1
  40. Nuclear Radio Continuum Emission of Low-Luminosity Active Galactic Nucleus NGC 4258 astro-ph.CO · 2011 · author #1
  41. Measurements of Antenna Surface for Millimeter-Wave Space Radio Telescope astro-ph.IM · 2011 · author #3
  42. VLBI Monitoring of 3C 84 (NGC 1275) in Early Phase of the 2005 Outburst astro-ph.HE · 2010 · author #6
  43. VLBI Detections of Parsec-Scale Nonthermal Jets in Radio-Loud Broad Absorption Line Quasars astro-ph.CO · 2009 · author #1
  44. A Synchronized Variation of the 6.7 GHz Methanol Maser in Cepheus A astro-ph · 2008 · author #3
  45. Mapping Observations of 6.7 GHz Methanol Masers with Japanese VLBI Network astro-ph · 2007 · author #3
  46. Verification of the Effectiveness of VSOP-2 Phase Referencing with a Newly Developed Simulation Tool, ARIS astro-ph · 2007 · author #4
  47. Japanese VLBI Network observations of radio-loud narrow-line Seyfert 1 galaxies astro-ph · 2007 · author #1
  48. Japanese VLBI Network astro-ph · 2006 · author #1
  49. VLBI observations of the most radio-loud, narrow-line quasar SDSS J094857.3+002225 astro-ph · 2006 · author #1
  50. The Kinematic and Spectral Ages of the Compact Radio Source CTD 93 astro-ph · 2006 · author #5
  51. Bigradient Phase Referencing astro-ph · 2006 · author #1

Mentions

  • 1310.0488 #2 · backfill · confidence 0.70 Akihiro Doi
  • 1308.1411 #3 · backfill · confidence 0.70 Akihiro Doi
  • 1306.0507 #14 · backfill · confidence 0.70 Akihiro Doi
  • 1305.3371 #2 · backfill · confidence 0.70 Akihiro Doi
  • 1305.0076 #3 · backfill · confidence 0.70 Akihiro Doi
  • 1301.4759 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1301.4758 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1301.4757 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1210.4942 #4 · backfill · confidence 0.70 Akihiro Doi
  • 1210.1303 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1205.2150 #5 · backfill · confidence 0.70 Akihiro Doi
  • 1204.1392 #6 · backfill · confidence 0.70 Akihiro Doi
  • 1112.0756 #6 · backfill · confidence 0.70 Akihiro Doi
  • 1109.2429 #6 · backfill · confidence 0.70 Akihiro Doi
  • 1107.5117 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1106.5627 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1106.2930 #1 · backfill · confidence 0.70 Akihiro Doi
  • 1101.5682 #3 · backfill · confidence 0.70 Akihiro Doi
  • 1001.3852 #6 · backfill · confidence 0.70 Akihiro Doi
  • 0910.5305 #1 · backfill · confidence 0.70 Akihiro Doi
  • 0804.4623 #3 · backfill · confidence 0.70 Akihiro Doi
  • 0710.4872 #3 · backfill · confidence 0.70 Akihiro Doi
  • 0707.0558 #4 · backfill · confidence 0.70 Akihiro Doi
  • 0704.3836 #1 · backfill · confidence 0.70 Akihiro Doi

Frequent Coauthors