First detection of the J−1 → (J − 1)0 − E methanol maser transitions at J = 7 and 10 Pedro K. Humire, Gisela N. Ortiz-León, Antonio Hernández-Gómez, Wenjin Yang, Christian Henkel and Sergio Martín A&A, 688 (2024) L1 Published online: 30 July 2024 DOI: 10.1051/0004-6361/202451008