Akihiro Doi
0000-0003-4384-9568
27 papers found
Refreshing results…
On the Origin of High-energy Neutrinos from NGC 1068: The Role of Nonthermal Coronal Activity
The Two-sided Jet Structures of NGC 1052 at Scales from 300 to 4 × 107 Schwarzschild Radii
Stable Radio Core of the Blazar Mrk 501 during High-energy Active State in 2012
On High-energy Particles in Accretion Disk Coronae of Supermassive Black Holes: Implications for MeV Gamma-rays and High-energy Neutrinos from AGN Cores
The Cygnus A Jet: Parabolic Streamlines up to Kiloparsec Scales
Radio jet structures at ∼100 pc and larger scales of the γ-ray-emitting narrow-line Seyfert 1 galaxy PMN J0948+0022
A balloon-borne very long baseline interferometry experiment in the stratosphere: Systems design and developments
Detection of Coronal Magnetic Activity in nearby Active Supermassive Black Holes
Parabolic Jets from the Spinning Black Hole in M87
Collimation, Acceleration, and Recollimation Shock in the Jet of Gamma-Ray Emitting Radio-loud Narrow-line Seyfert 1 Galaxy 1H0323+342
A Recollimation Shock in a Stationary Jet Feature with Limb-brightening in the Gamma-Ray-emitting Narrow-line Seyfert 1 Galaxy 1H 0323+342
High-frequency excess in the radio continuum spectrum of the type-1 Seyfert galaxy NGC 985
A radio detection survey of narrow-line Seyfert 1 galaxies using very long baseline interferometry at 22 GHz: Table 1.
An obscured narrow-line Seyfert 1 galaxy candidate, Mrk 1388 with nonthermal jets
A FANAROFF-RILEY TYPE I CANDIDATE IN NARROW-LINE SEYFERT 1 GALAXY Mrk 1239
Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020 4320: Recently Restarted Jet Activity?
Very Long Baseline Array Imaging of Parsec-Scale Radio Emissions in Nearby Radio-Quiet Narrow-Line Seyfert 1 Galaxies
Nuclear Radio Jet From a Low-Luminosity Active Galactic Nucleus in Ngc 4258
Kiloparsec-Scale Radio Structures in Narrow-Line Seyfert 1 Galaxies
Millimeter Radio Continuum Emissions as the Activity of Supermassive Black Holes in Nearby Early-Type Galaxies and Low-Luminosity Active Galactic Nuclei
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