| Autor: |
R.V. Vashchishyn, V.A. Shepelev, O.A. Litvinenko, G.S. Podgorny Podgorny, V.G. Derevyagin, A.V. Lozonsky |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Odessa Astronomical Publications. 35:91-94 |
| ISSN: |
1810-4215 |
| DOI: |
10.18524/1810-4215.2022.35.268191 |
| Popis: |
We present the results of the observation of the radio galaxy 3C239 with the URAN interferometers at the decameter wavelengths. According to our study, the source in this range consists of two components that coincide in position and size with the lobes of the radio galaxy observed at the decimeter wavelengths, and a compact component corresponding to one of its hot spots. Another hot spot is not detected due to its low flux density at decameter wavelengths. In addition, an extended region of radiation with low surface brightness was detected, which surrounds the source lobes. The size of this halo is 28 arcsec, and its emission at the frequency of 25 MHz is about 20% of the total flux of the radio galaxy. A possible view of spectra of the radio source components and their variation in the range from decameter to decimeter wavelengths are determined. It is noted that in contrast to the high-frequency structure of 3C239, where radiation of the compact hot spots dominates, at decameter wavelengths about 90% of the radio galaxy flux is provided by more extended components — the source lobes and the halo. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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