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arXiv · 1903.11632

GMRT Low-frequency Imaging of an Extended Sample of X-shaped Radio Galaxies

Dharam V. Lal·Biny Sebastian·C. C. Cheung·A. Pramesh Rao
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Abstract

We present a low-frequency imaging study of an extended sample of X-shaped radio sources using the Giant Metrewave radio telescope (GMRT) at two frequencies (610 and 240 MHz). The sources were drawn from a Very Large Array FIRST-selected sample and extends an initial GMRT study at the same frequencies, of 12 X-shaped radio galaxies predominantly from the 3CR catalog (Lal & Rao 2007). Both the intensity maps and spectral index maps of the 16 newly observed sources are presented. With the combined sample of 28 X-shaped radio sources, we found no systematic differences in the spectral properties of the higher surface brightness, active lobes versus the lower surface brightness, off-axis emission. The properties of the combined sample are discussed, including the possible role of a twin active galactic nuclei model in the formation of such objects.

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Dharam V. Lal, Biny Sebastian, C. C. Cheung, A. Pramesh Rao. 2019-03-27. GMRT Low-frequency Imaging of an Extended Sample of X-shaped Radio Galaxies. https://doi.org/10.3847/1538-3881%2Fab1419

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