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Solar Photoionization Rates for Interstellar Neutrals in the Inner Heliosphere: H, He, O, and Ne

Bochsler, P.; Kucharek, H.; Möbius, E. +4 more

Extreme UV (EUV) spectra from the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED)/Solar EUV Experiment are used to infer photoionization rates in the inner heliosphere. Relating these rates to various proxies describing the solar EUV radiation, we construct a multi-linear model which allows us to extrapolate ionization rates bac…