Signature of a Heliotail Organized by the Solar Magnetic Field and the Role of Nonideal Processes in Modeled IBEX ENA Maps: A Comparison of the BU and Moscow MHD Models

Energetic neutral atom (ENA) models typically require post-processing routines to convert the distributions of plasma and H atoms into ENA maps. Here we investigate how two kinetic-MHD heliosphere (the BU Moscow models) manifest in modeled maps using same prescription they compare with Interstellar Boundary Explorer (IBEX) observations. Both MHD treat solar wind as a single-ion for protons, which include thermal ions, pick-up ions (PUIs), electrons. Our partitions three distinct ion populations (thermal wind, PUIs transmitted ones energized at termination shock) Maxwellian distributions. heliospheric produce heliotail heliosheath that is organized by magnetic field north south columns become lobes high mass flux flowing down heliotail; however, model, ISM flows between distances larger than 300 au. While our produces similar different solutions IBEX-Hi energy range (0.5–6 keV), scaling factor ?2 be agreement data. This problem present other approximation multiple species indicates either higher density or some acceleration required.