ULF foreshock under radial IMF: THEMIS observations and global kinetic simulation Vlasiator results compared - M. Palmroth; M. Archer; R. Vainio; H. Hietala; Y. Pfau-Kempf; S. Hoilijoki; O. Hannuksela; U. Ganse; A. Sandroos; S. von Alfthan; J. P. Eastwood (United States, 2022)