Estimating the Shape of the Heliopause from IBEX Observations of Secondary Neutral Helium

Philip A Isenberg1, Harald Kucharek1, Jeewoo Park1 and Nathan Schwadron2, (1)University of New Hampshire, Institute for the Study of Earth, Oceans and Space, and Department of Physics, Durham, NH, United States, (2)University of New Hampshire, Institute for the Study of Earth, Oceans and Space, and Department of Physics, Durham, United States