ANGULAR STRUCTURE OF FRII RADIO SOURCES 3C169.1 AND 3C263 AT DECAMETER WAVELENGTHS
Journal Title: Odessa Astronomical Publications - Year 2016, Vol 29, Issue
Abstract
The radio galaxy 3C169.1 and the quasar 3C263, located at nearly the same distance with red shift z>0.6, have similar morphological and spectral characteristics. The maps of the sources obtained at decimeter and centimeter wavelengths have shown they are FRII radio sources with steep spectra and approximately equal angular sizes. The very first investigation of the sources structure at decameter wavelengths is presented in the report. Observations were made using a network of the URAN decameter interferometers with baselines 42 to950 km and with maximum angular resolution of arcsec order of magnitude. The models of the image of these sources based on visibility functions measured have been obtained at frequencies of 20 and 25 MHz. They were composed of elliptical components with Gaussian brightness distribution. To facilitate the comparison of these lowfrequency models with high-frequency radio images, the latter were converted to the similar models by fitting the Gaussian components to lobes and hot spots selected at the maps. Comparison of the models revealed changes in a structure of the sources caused by the frequency decrease.
Authors and Affiliations
R. V. Vashchishin, V. A. Shepelev, A. B. Lozinskyy, O. A. Lytvynenko
Keywords
Related Articles
- EP ID EP374943
- DOI 10.18524/1810-4215.2016.29.85207
- Views 76
- Downloads 0
THE OBSERVATIONS OF ARTIFICIAL SATELLITES AND SPACE DEBRIS USING KT-50 TELESCOPE IN THE ODESSA UNIVERSITY
In paper the equipment, images analysis techniques in the frame and the method of the satellite brightness estimation in the standard photometric system are describes. Within two years, on the KT-50 telescope were obtain...
IS THERE 9-TH PLANET IN OUR SOLAR SYSTEM?
Brown and Batygin informed on indirect evidence of existence of the ninth planet in Solar System (SS). Some evidence pointing on its possible mass in 10 Earth’s mass; its distance from Sun at perihelion can be ~200AU, at...
First results of the searching of asteroids based on the data of FON-Dushanbe processed plates
We have initiated the search of asteroids and comets on the basis of the processing digital images of plates obtained in the framework of FON project (the photographic survey of the northern hemisphere), Dushanbe sectio...
DETERMINATION OF THE GALAXY CLUSTER ORIENTATION USING X-RAY IMAGES BY FOCAS METHOD
In our work we considered orientations of bright X-ray halos of the galaxy clusters (mainly Abell clusters). 78 appropriate clusters were selected using data from Xgal sample of extragalactic objects in XMM-Newton observ...
A STUDY OF MASS LOSS AND DUST FORMATION NEAR HOT STARS
At present dust formation is well studied only near cool stars, whose surface temperatures are close to those of dust sublimation. Hot stars need to supply large amounts of circumstellar material to allow dust formation...