The role of the hot porous layer in the gas flow in the inner coma O. Mokhtari, Yu. V. Skorov, L. Rezac, R. Marschall, D. Belousov, O. Pinzón-Rodríguez, M. Küppers and N. Thomas A&A, 693 (2025) A57 Published online: 03 January 2025 DOI: 10.1051/0004-6361/202451637