Study of Large-Scale Radio Structures associated with Spiral Galaxies

Magdalena Styczeń, Urszula Pajdosz-Śmierciak, Mateusz Rałowski, Marek Jamrozy

Almost all known powerful extragalactic radio sources, named radio galaxies, are hosted by elliptical (or lenticular) galaxies. However, few examples of strong radio galaxies associated with spiral galaxies have been found in the recent years. In the very centre of a parent galaxy the active galactic nucleus (AGN) can be found. AGN is a small-size, rare formation composed of a supermassive black hole (SMBH; with masses exceeding 10 million Solar masses) surrounded by matter forming an accretion disk, a dusty torus and a corona - heated to millions of degrees and, in some cases, jets of relativistic plasma. These energetic, collimated outflows sometimes blown into huge lobes have their origin near the SMBH and are characterized by a wide range of observed sizes (from dozens of kiloparsecs up to a few megaparsecs). A very important aspect in the study of AGNs is to answer the question why only few powerful, large-scale radio sources are associated with spiral galaxies. Here we present these unique objects with particular interest in radio galaxy B0313−192 which is located in Abell 428 galaxy cluster.

Proceedings of the Polish Astronomical Society, vol. 10, 288-290 (2020)

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