Proposal code
w411
Proposal title
Peculiar GPS source 2050+364: gravitational lensing system?
The |
Investigators and their |
Affiliations |
| P.I. |
KAMENO Seiji |
NAO, Japan |
| |
FUJISAWA Kenta |
NAO, Japan |
Proposal Abstract
We propose to observe the GPS galaxy 2050+364 at 1.7 and 5 GHz.
This object shows peculiar properties: the east and west components
separated by 60 mas are similar to each other in terms of the morphologies
and spectra.
The both show steep spectra at high frequency like a radio lobe, however, no
significant central component like the core can be seen between the east and
west component.
A gravitational lense model could explain the nature.
If so, it is the smallest separation of the lensing system.
Gravity source can be a close binary of compact objects in the Cygnus
superbubble, in which many OB associations exist.
Based on the morphologies of components, we estimated the mass of the
gravity source of 126 M_{sun} at the distance of 1 kpc.
VSOP observations test the hypothesis and would reveal the morphological
change within 6 months.
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