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)