Abstract:
Active galactic nuclei (AGNs) are among the most powerful engines in the Universe. A central open question is how accretion physics, obscuration, and feedback are intertwined in shaping these systems. This paper presents an analysis of SDSS-V–eROSITA Data Level 1 (DL1) data from the 19th data release (DR19). The work is based on SDSS spectra for 2119 soft X-ray selected quasars (0 < z < 0.95), drawn from the eROSITA all-sky catalogue (eRASS1), and complemented by mid-infrared (MIR) data from the Wide-field Infrared Survey Explorer (WISE). We assessed the outflow strength using the W80 measurement of the [O III] λ5007 emission line and derived the virial black hole mass from the broad Hβ emission line. The rest-frame 2–10 keV X-ray luminosity and the 6 µm MIR luminosity were used to determine the X-ray weakness, relative to established luminosity scaling relations. We compared the W80line width, X-ray luminosity, and black hole mass and report a weak negative trend between X-ray weakness and outflow strength for quasarswith W80 ≥ 800 km s−1. These results support the interpretation that the observed X-ray weakness in AGNs may be linked to dense, nuclear-scale outflows.
Description:
Open Access
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
