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A sensitive study of the peculiar jet structure HST-1 in M87
Carolina Casadio, José L. Gómez, Marcello Giroletti +5
To obtain a better understanding of the location and mechanisms for the production of the gamma-ray emission in jets of AGN we present a detailed study of the HST-1 structure, 0.8…
Evidence for nuclear radio jet and its structure down to <100 Schwarzschild radii in the center of the Sombrero galaxy (M 104, NGC 4594)
Kazuhiro Hada, Akihiro Doi, Hiroshi Nagai +4
Abridged: We investigated the detailed radio structure of the nucleus of the Sombrero galaxy using high-resolution, quasi-simultaneous, multi-frequency, phase-referencing VLBA obse…
High-Angular-Resolution and High-Sensitivity Science Enabled by Beamformed ALMA
Vincent Fish, Walter Alef, James Anderson +66
An international consortium is presently constructing a beamformer for the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile that will be available as a facility instrum…
Innermost collimation structure of the M87 jet down to ~ten Schwarzschild radii
Kazuhiro Hada, Motoki Kino, Akihiro Doi +6
We investigated the detailed inner jet structure of M87 using the Very Long Baseline Array data at 2, 5, 8.4, 15, 23.8, 43, and 86 GHz, especially focusing on the multi-frequency p…
Nuclear Radio Jet from a Low-Luminosity Active Galactic Nucleus in NGC 4258
Akihiro Doi, Kotaro Kohno, Kouichiro Nakanishi +4
The nearby low-luminosity active galactic nucleus (LLAGN) NGC 4258 has a weak radio continuum component at the galactic center. We investigate its radio spectral properties on the…