The internal Faraday screen of Sagittarius A* Maciek Wielgus, Sara Issaoun, Iván Martí-Vidal, Razieh Emami, Monika Moscibrodzka, Christiaan D. Brinkerink, Ciriaco Goddi and Ed Fomalont A&A, 682 (2024) A97 Published online: 09 February 2024 DOI: 10.1051/0004-6361/202347772