1.9k citations · 18.4k across the 187 of their papers we have counts for
6 papers · 1 filter
A strong radio brightening at the jet base of M87 during the elevated very-high-energy gamma-ray state in 2012
K. Hada, M. Giroletti, M. Kino +18
The nearby radio galaxy M87 offers a unique opportunity for exploring the connection between gamma-ray production and jet formation at an unprecedented linear resolution. However,…
Very Long Baseline polarimetry and the gamma-ray connection in Markarian 421 during the broadband campaign in 2011
R. Lico, M. Giroletti, M. Orienti +16
We analyzed data in polarized intensity obtained with the Very Long Baseline Array (VLBA) at twelve epochs (one observation per month from January to December 2011) at 15, 24, and…
VLBI observations of bright AGN jets with KVN and VERA Array (KaVA): Evaluation of Imaging Capability
Kotaro Niinuma, Sang-Sung Lee, Motoki Kino +69
The Korean very-long-baseline interferometry (VLBI) network (KVN) and VLBI Exploration of Radio Astrometry (VERA) Array (KaVA) is the first international VLBI array dedicated to hi…
A strong radio brightening at the jet base of M87 during the elevated very-high-energy gamma-ray state in 2012
K. Hada, M. Giroletti, M. Kino +18
We report our intensive radio monitoring observations of the jet in M87 with the VLBI Exploration of Radio Astrometry (VERA) and the European VLBI Network (EVN) from February 2011…
Relativistic electrons and magnetic field of the M87 jet on ~ten Schwarzschild radii scale
M. Kino, F. Takahara, K. Hada +1
We explore energy densities of magnetic field and relativistic electrons in the M87 jet. Since the radio core at the jet base is identical to the optically thick surface against sy…
Limb-Brightened Jet of 3C 84 Revealed by the 43-GHz Very-Long-Baseline-Array Observation
H. Nagai, T. Haga, G. Giovannini +8
We present a study of sub-pc scale radio structure of the radio galaxy 3C 84/NGC 1275 based on the Very Long Baseline Array (VLBA) data at 43 GHz. We discover a limb-brightening in…