X-ray properties of mJy Radio Galaxies
Year: 2024
Type: article
Abstract: Radio galaxies in the local Universe display diverse extended radio morphologies, optical spectra, and host galaxy properties, which as suggested by studies could arise from intrinsic differences in central SMBH parameters or jet content, or be extrinsically driven by the host galaxy and environmental properties. While research in this field has predominantly focused on the population of the brightest radio galaxies (e.g. 3CR and 2Jy catalogs with flux limits of Jy), the results remain inconclusive and do not definitively support any of the proposed hypotheses. Moreover, recent studies of less powerful mJy radio galaxies have introduced additional complexity, revealing more compact radio structures compared to their brighter counterparts. In this work, we present the first comprehensive X-ray analysis for a sample of mJy radio galaxies combining optical data from SDSS DR7 and radio observations from NRAO FIRST and NVSS surveys. This extends the study of the radio morphology-accretion mode link, previously examined for Jy radio galaxies, to lower radio powers. We complemented the sample with X-ray data from Chandra, which allows to probe the SMBH accretion properties and processes fueling it at sub-pc/pc scales, and the thermal environments potentially responsible for change of radio morphologies at kpc scales.
Author: Torbaniuk, Olena
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6893040969
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