Spatial, temporal, and circularity variations of the ENA ribbon over seven years of IBEX observations

Maher A Dayeh1, Eric Zirnstein2, Herbert O Funsten3, Stephen A Fuselier1, David J McComas4, Nathan Schwadron5 and Jamey R Szalay2, (1)Southwest Research Institute, San Antonio, TX, United States, (2)Princeton University, Department of Astrophysical Sciences, Princeton, NJ, United States, (3)Los Alamos National Laboratory, Los Alamos, NM, United States, (4)Princeton University, Department of Astrophysical Sciences and Office of the Vice President for the Princeton Plasma Physics Laboratory, Princeton, NJ, United States, (5)University of New Hampshire, Durham, NH, United States