
TY  - JOUR
A1  - Kameno, Seiji 
A1  - Inoue, Makoto 
A1  - Wajima, Kiyoaki 
A1  - Sawada-Satoh, Satoko 
A1  - Shen, Zhi-Qiang 
T1  - Dense Plasma Torus in the GPS Galaxy NGC 1052
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 2003
VL  - 20
IS  - 1
SP  - 134
EP  - 139
KW  - Keywords: galaxies: active &#8212; galaxies: individual (NGC 1052, 0238&#8211;084) &#8212; galaxies: nuclei &#8212; galaxies: jets &#8212; radio continuum: galaxies &#8212; techniques: high angular resolution
UR  - https://doi.org/10.1071/AS03003 
N2  - We report results from nearly simultaneous pentachromatic VLBI observations towards a nearby GPS galaxy NGC 1052. The observations at 1.6 and 4.8 GHz with the VSOP, and at 2.3, 8.4, and 15.4 GHz with VLBA, provide linear resolutions of &#126;0.1 pc. Convex spectra of a double-sided jet imply that synchrotron emission is obscured through foreground cold dense plasma, in terms of free&#8211;free absorption (FFA). We found a central condensation of the plasma which covers about 0.1 and 1 pc of the approaching and receding jets, respectively. A simple model with a geometrically thick plasma torus perpendicular to the jets is established to explain the asymmetric distribution of FFA opacities. 
ER  -

