2011ApJ...727L..48G

We show that the shape of the IBEX Ribbon can be reproduced assuming energetic neutral atoms originate in regions beyond the heliopause where the interstellar magnetic field is the strongest and perpendicular to radial directions from the Sun. The best fit to the observed ribbon was obtained for the local interstellar magnetic field B_∞= 3.0±1.0 µG pointing from ecliptic/galactic coordinates (λ, β)/(l, b) = (225°±5°, 35°±5°)/(27°±5°, 51°±5°) close to the apparent ribbon center (λ, β)/(l, b) = (221°, 39°)/(33°, 55°). The geometrical considerations presented below should prove useful in identifying the mechanism of ribbon formation.