MAVEN Observations of Low Frequency Steepened Magnetosonic Waves and Associated Heating of the Martian Nightside Ionosphere - Fowler, CM; Hanley, KG; McFadden, JP; Chaston, CC; Bonnell, JW; Halekas, JS; Espley, JR; DiBraccio, GA; Schwartz, SJ; Mazelle, C; Mitchell, DL; Xu, S; et al. (JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2021)