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Helical magnetic fields in the M87 jet at arc-second scales
J. C. Algaba, K. Asada, M. Nakamura
We investigate the magnetic field configuration of the M87 jet at arc-second scales by using archival polarimetric VLA data at 8, 15, 22 and 43 GHz. By stacking images over three y…
Very Long Baseline Array Imaging of Parsec-scale Jet Structures in Radio-loud Narrow-line Seyfert 1 Galaxies
Akihiro Doi, Keiichi Asada, Hiroshi Nagai
We conducted very long baseline interferometry (VLBI) observations of five radio-loud narrow-line Seyfert 1 (NLS1) galaxies in milliarcsecond resolutions at 1.7 GHz (18 cm) using t…
VLBI Monitoring of 3C 84 in Gamma-ray Active Phase
H. Nagai, K. Suzuki, K. Asada +5
We report multi-epoch Very Long Baseline Interferometry (VLBI) study of the innermost jet of 3C 84. We carried out 14-epoch VLBI observations during 2006-2009 with the Japanese VLB…
Evidence of non-thermal X-ray emission from radio lobes of Cygnus A
Y. Yaji, M. S. Tashiro, N. Isobe +5
Using deep Chandra ACIS observation data for Cygnus A, we report evidence of non-thermal X-ray emission from radio lobes surrounded by a rich intra-cluster medium (ICM). The diffus…