ALMA 360 parsec, high-frequency observations reveal warm dust in the center of a z = 6.9 quasar Romain A. Meyer, Fabian Walter, Fabio Di Mascia, Roberto Decarli, Marcel Neeleman and Bram Venemans A&A, 695 (2025) L18 Published online: 21 March 2025 DOI: 10.1051/0004-6361/202453279