Magolego, IsaacDeane, RogerThorat, KshitijHeywood, IanRasakanya, WilliamAravena, ManuelBleem, Lindsey E.Campitiello, Maria GiuliaPhadke, Kedar A.Spilker, Justin S.Vieira, Joaquin D.Zhou, DazhiBenson, Bradford A.Chapman, Scott C.Posses, Ana C.Schrabback, TimStark, Anthony A.Vizgan, David2026-02-202026-02-202026-01Magolego, I.S., Deane, R.P., Thorat, K. et al. 2026, 'Discovery of a z ∼ 0.8 ultra steep spectrum radio halo in the MeerKAT-South Pole Telescope Survey', Monthly Notices of the Royal Astronomical Society, vol. 545, no. 1, art. staf2022, pp. 1-8, doi : 10.1093/mnras/staf2022.0035-8711 (print)1365-2966 (online)10.1093/mnras/staf2022http://hdl.handle.net/2263/108499DATA AVAILABILITY : The MeerKAT raw data used in this study are publicly available (Project IDs SCI-20220822-JV-02 and SCI-20230907-JV-01) in accordance with the South African Radio Astronomy Observatory data release policy, while calibrated and advanced data products are available upon reasonable request.Please read abstract in the article.en© The Author(s) 2025. Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/)Ultra-steep spectrum radio haloes (USSRHs)Galaxies: clusters: generalRadio continuum: generalX-rays: galaxiesX-rays: galaxies: clustersIntracluster medium (ICM)LetterArticle