First observations and simulations of specularly reflected He++ at Earth's quasi-perpendicular bow shock

Jeffrey Michael Broll1, Stephen A Fuselier1, Karlheinz J Trattner2, Barbara L Giles3, Brian J Anderson4 and James L Burch1, (1)Southwest Research Institute, San Antonio, TX, United States, (2)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (3)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (4)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States