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VLBI Imagings of Kilo-parsec Knot in 3C 380
Shoko Koyama, Motoki Kino, Hiroshi Nagai +3
We investigate observational properties of a kilo-parsec scale knot in radio-loud quasar 3C 380 by using two epoch archival data obtained by Very Long Baseline Interferometry (VLBI…
VLBI Observations of the Jet in M87 During the Very-High-Energy Gamma-ray Flare in April 2010
Kazuhiro Hada, Motoki Kino, Hiroshi Nagai +6
We report on the detailed radio status of the M87 jet during the Very-High-Energy (VHE) gamma-ray flaring event in April 2010, obtained from high-resolution, multi-frequency, phase…
Radio and gamma-ray follow-up of the exceptionally high activity state of PKS 1510-089 in 2011
M. Orienti, S. Koyama, F. D'Ammando +24
We investigate the radio and gamma-ray variability of the flat spectrum radio quasar PKS 1510-089 in the time range between 2010 November and 2012 January. In this period the sourc…
GENJI Programme: Gamma-ray Emitting Notable AGN Monitoring by Japanese VLBI
Hiroshi Nagai, Motoki Kino, Kotaro Niinuma +11
We introduce the GENJI program (Gamma-ray Emitting Notable AGN Monitoring by Japanese VLBI), which is a monitoring program of gamma-ray bright AGNs with the VERA array (VLBI Explor…
Kiloparsec-scale Radio Structures in Narrow-line Seyfert 1 Galaxies
Akihiro Doi, Hiroshi Nagira, Nozomu Kawakatu +3
We report the finding of kiloparsec (kpc)-scale radio structures in three radio-loud narrow-line Seyfert 1 (NLS1) galaxies from the Faint Images of the Radio Sky at Twenty-centimet…
Radio-to-gamma-ray Monitoring of the Narrow-Line Seyfert 1 Galaxy PMN J0948+0022 from 2008 to 2011
L. Foschini, E. Angelakis, L. Fuhrmann +39
We present more than three years of observations at different frequencies, from radio to high-energy gamma-rays, of the Narrow-Line Seyfert 1 (NLS1) Galaxy PMN J0948+0022 (z=0.585)…