Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format
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2022
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The goal of this paper is to investigate the flux and spectral index distribution of FR II radio galaxy 4C 14.11. We focused on the distribution of flux and spectral indices over the lobes, as well as in their hot spots. For that purpose, we used publicly available observations of this radio galaxy given at 1450 and 8440 MHz. Particularly, we used Leahy’s Atlas of radio-emitting double radio sources, Jodrell Bank Centre for Astrophysics in Manchester, as well as NASA/IPAC Extragalactic Database. We found that the non-thermal (synchrotron) radiation dominates over the areas of the lobes. Distinction between hot spots and rest of the lobes are much smaller in the spectral index than in the flux. We also found that over the inner parts of both lobes, spectral index α is flat in average and significantly higher than 1.2, indicating that 4C 14.11 is old AGN.
Кључне речи:
Astrophysics / Galaxies: active / Galaxies: jets / Radiation mechanisms: non-thermal / Radio continuum: general / SurveysИзвор:
Advances in Space Research, 2022Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200002 (Астрономска опсерваторија, Београд) (RS-MESTD-inst-2020-200002)
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Институција/група
VinčaTY - JOUR AU - Borka Jovanović, Vesna AU - Borka, Duško AU - Arsenić, Arsenije AU - Jovanović, Predrag PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10341 AB - The goal of this paper is to investigate the flux and spectral index distribution of FR II radio galaxy 4C 14.11. We focused on the distribution of flux and spectral indices over the lobes, as well as in their hot spots. For that purpose, we used publicly available observations of this radio galaxy given at 1450 and 8440 MHz. Particularly, we used Leahy’s Atlas of radio-emitting double radio sources, Jodrell Bank Centre for Astrophysics in Manchester, as well as NASA/IPAC Extragalactic Database. We found that the non-thermal (synchrotron) radiation dominates over the areas of the lobes. Distinction between hot spots and rest of the lobes are much smaller in the spectral index than in the flux. We also found that over the inner parts of both lobes, spectral index α is flat in average and significantly higher than 1.2, indicating that 4C 14.11 is old AGN. T2 - Advances in Space Research T1 - Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format DO - 10.1016/j.asr.2022.05.062 ER -
@article{ author = "Borka Jovanović, Vesna and Borka, Duško and Arsenić, Arsenije and Jovanović, Predrag", year = "2022", abstract = "The goal of this paper is to investigate the flux and spectral index distribution of FR II radio galaxy 4C 14.11. We focused on the distribution of flux and spectral indices over the lobes, as well as in their hot spots. For that purpose, we used publicly available observations of this radio galaxy given at 1450 and 8440 MHz. Particularly, we used Leahy’s Atlas of radio-emitting double radio sources, Jodrell Bank Centre for Astrophysics in Manchester, as well as NASA/IPAC Extragalactic Database. We found that the non-thermal (synchrotron) radiation dominates over the areas of the lobes. Distinction between hot spots and rest of the lobes are much smaller in the spectral index than in the flux. We also found that over the inner parts of both lobes, spectral index α is flat in average and significantly higher than 1.2, indicating that 4C 14.11 is old AGN.", journal = "Advances in Space Research", title = "Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format", doi = "10.1016/j.asr.2022.05.062" }
Borka Jovanović, V., Borka, D., Arsenić, A.,& Jovanović, P.. (2022). Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format. in Advances in Space Research. https://doi.org/10.1016/j.asr.2022.05.062
Borka Jovanović V, Borka D, Arsenić A, Jovanović P. Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format. in Advances in Space Research. 2022;. doi:10.1016/j.asr.2022.05.062 .
Borka Jovanović, Vesna, Borka, Duško, Arsenić, Arsenije, Jovanović, Predrag, "Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format" in Advances in Space Research (2022), https://doi.org/10.1016/j.asr.2022.05.062 . .