Effect of Pitch Angle Scattering on Formation of the Interstellar Boundary Explorer Ribbon in the Outer Heliosheath

摘要

The dominant feature in the Interstellar Boundary EXplorer maps is a ribbon of enhanced energetic neutral atom emissions. We analyze the ribbon formation in the outer heliosheath and stability of the resulting pitch angle distribution function with respect to the fast magnetosonic and ion cyclotron wave generation.