Numerical studies on neutral solar wind generated at high and low solar latitudes

In this work, we examine the properties of the neutral solar wind (NSW) emanating from the solar corona above few solar radii, at low and high solar latitudes. It is important to study NSW because it allows us to investigate the acceleration region of the solar wind. In fact, neutrals retain information on the three-dimensional distribution of hydrogen at the level where they are generated as the proton velocity distribution is frozen within the generated neutrals and transferred up to our observation point. NSW is flowing together with the ionized solar wind, but it has basically different characteristics in its phase space distribution function. In fact, contrary to the ionized component, NSW is unmodified along the way from the originating source. In this particular study, we will consider as our vantage point the Solar Orbiter position.