Does absorption against AGN reveal supermassive black hole accretion?

Does absorption against AGN reveal supermassive black hole accretion?DOI: info:10.1093/mnras/stac3194v. 518878–892
Rose, Tom, McNamara, B. R., Combes, F., Edge, A. C., Fabian, A. C., Gaspari, M., Russell, H., Salomé, P., Tremblay, G., and Ferland, G. 2023. "Does absorption against AGN reveal supermassive black hole accretion?" Monthly Notices of the Royal Astronomical Society, 518 878–892. https://doi.org/10.1093/mnras/stac3194.
ID: 168370
Type: article
Keywords: SAO