Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240
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Here we investigate the giant radio galaxy DA 240, which is a FR II source. Specifically, we investigate its flux density, as well as the spectral index distribution. For that purpose, we used publicly available data for the source: Leahy's atlas of double radio-sources and NASA/IPAC Extragalactic Database (NED). We used observations at 326 MHz (92 cm) and at 608 MHz (49 cm) and obtained spectral index distributions between 326 and 608 MHz. For the first time we give spectral index map for these frequencies. We found that the synchrotron radiation is the dominant radiation mechanism over most of the area of DA 240, and also investigated the mechanism of radiation at some characteristic points, namely its core and the hotspots. The results of this study will be helpful for understanding the evolutionary process of the DA 240 radio source.
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active - galaxies / DA 240 / galaxies / galaxies - galaxies / individual / jets - galaxies / nuclei - radio continuumИзвор:
Contributions of the Astronomical Observatory Skalnaté Pleso, 2023, 53, 3, 188-196Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200017 (Универзитет у Београду, Институт за нуклеарне науке Винча, Београд-Винча) (RS-MESTD-inst-2020-200017)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200002 (Астрономска опсерваторија, Београд) (RS-MESTD-inst-2020-200002)
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VinčaTY - JOUR AU - Borka-Jovanović, Vesna AU - Borka, Duško AU - Jovanović, Predrag PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12725 AB - Here we investigate the giant radio galaxy DA 240, which is a FR II source. Specifically, we investigate its flux density, as well as the spectral index distribution. For that purpose, we used publicly available data for the source: Leahy's atlas of double radio-sources and NASA/IPAC Extragalactic Database (NED). We used observations at 326 MHz (92 cm) and at 608 MHz (49 cm) and obtained spectral index distributions between 326 and 608 MHz. For the first time we give spectral index map for these frequencies. We found that the synchrotron radiation is the dominant radiation mechanism over most of the area of DA 240, and also investigated the mechanism of radiation at some characteristic points, namely its core and the hotspots. The results of this study will be helpful for understanding the evolutionary process of the DA 240 radio source. T2 - Contributions of the Astronomical Observatory Skalnaté Pleso T1 - Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240 VL - 53 IS - 3 SP - 188 EP - 196 DO - 10.31577/caosp.2023.53.3.188 ER -
@article{ author = "Borka-Jovanović, Vesna and Borka, Duško and Jovanović, Predrag", year = "2023", abstract = "Here we investigate the giant radio galaxy DA 240, which is a FR II source. Specifically, we investigate its flux density, as well as the spectral index distribution. For that purpose, we used publicly available data for the source: Leahy's atlas of double radio-sources and NASA/IPAC Extragalactic Database (NED). We used observations at 326 MHz (92 cm) and at 608 MHz (49 cm) and obtained spectral index distributions between 326 and 608 MHz. For the first time we give spectral index map for these frequencies. We found that the synchrotron radiation is the dominant radiation mechanism over most of the area of DA 240, and also investigated the mechanism of radiation at some characteristic points, namely its core and the hotspots. The results of this study will be helpful for understanding the evolutionary process of the DA 240 radio source.", journal = "Contributions of the Astronomical Observatory Skalnaté Pleso", title = "Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240", volume = "53", number = "3", pages = "188-196", doi = "10.31577/caosp.2023.53.3.188" }
Borka-Jovanović, V., Borka, D.,& Jovanović, P.. (2023). Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240. in Contributions of the Astronomical Observatory Skalnaté Pleso, 53(3), 188-196. https://doi.org/10.31577/caosp.2023.53.3.188
Borka-Jovanović V, Borka D, Jovanović P. Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240. in Contributions of the Astronomical Observatory Skalnaté Pleso. 2023;53(3):188-196. doi:10.31577/caosp.2023.53.3.188 .
Borka-Jovanović, Vesna, Borka, Duško, Jovanović, Predrag, "Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240" in Contributions of the Astronomical Observatory Skalnaté Pleso, 53, no. 3 (2023):188-196, https://doi.org/10.31577/caosp.2023.53.3.188 . .
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