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The magnetic field structure in CTA 102 from high resolution mm-VLBI observations during the flaring state in 2016-2017
Carolina Casadio, Alan P. Marscher, Svetlana G. Jorstad +14
Investigating the magnetic field structure in the innermost regions of relativistic jets is fundamental to shed light on the crucial physical processes giving rise to the jet forma…
Spatially resolved origin of mm-wave linear polarization in the nuclear region of 3C 84
J. -Y. Kim, T. P. Krichbaum, A. P. Marscher +12
We report results from a deep polarization imaging of the nearby radio galaxy 3C84 (NGC1275). The source was observed with the Global Millimeter VLBI Array (GMVA) at 86…
Exploring the Nature of the 2016 γ-ray Emission in the Blazar 1749+096
Dae-Won Kim, Sascha Trippe, Sang-Sung Lee +9
Recent Fermi-Large Area Telescope (LAT) light curves indicate an active -ray state spanning about five months from 2016 June to 2016 October in the BL Lac object 1749+096 (OT 08…
Exploring the Variability of the Flat Spectrum Radio Source 1633+382. II: Physical Properties
Juan-Carlos Algaba, Sang-Sung Lee, Bindu Rani +13
The flat spectrum radio quasar 1633+382 (4C~38.41) showed a significant increase of its radio flux density during the period 2012 March - 2015 August which correlates with gamma-ra…
The limb-brightened jet of M87 down to 7 Schwarzschild radii scale
J. -Y. Kim, T. P. Krichbaum, R. -S. Lu +6
M87 is one of the nearest radio galaxies with a prominent jet extending from sub-pc to kpc-scales. Because of its proximity and large mass of the central black hole, it is one of t…
KVN observations suggest multiple -ray emission regions in 3C 84
Jeffrey A. Hodgson, Bindu Rani, Sang-Sung Lee +15
3C 84 (NGC 1275) is a well-studied mis-aligned Active Galactic Nucleus (AGN), which has been active in Gamma rays since at least 2008. We have monitored the source at four waveleng…
Long-term millimeter VLBI monitoring of M87 with KVN at milliarcsecond resolution: nuclear spectrum
Jae-Young Kim, Sang-Sung Lee, Jeffrey A. Hodgson +5
We study the centimeter- to millimeter-wavelength synchrotron spectrum of the core of the radio galaxy M87 at spatial scales using four years…