O'Brien, JFreeman, Kennethvan der Kruit, P C2015-12-080004-6361http://hdl.handle.net/1885/36970This is the third paper in a series in which we attempt to put constraints on the flattening of dark halos in disk galaxies. We observed for this purpose the Hi in edge-on galaxies, where it is in principle possible to measure the force field in the haloKeywords: Disks (structural components); Dispersions; Distribution functions; Gravitation; Kinematics; Rotation; Three dimensional; Velocity; Dark matter halos; Differential rotation; Disk galaxies; Force fields; Galaxies: halos; Gas flaring; Gas layers; Gravitatio Galaxies: halos; Galaxies: ISM; Galaxies: kinematics and dynamics; Galaxies: structure201010.1051/0004-6361/2009125672024-05-19