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Global Electric Fields in Nonequilibrium Inhomogeneous Heliospheric Plasma with Runaway Electrons

Presentation #350.09 in the session The Sun and the Solar System — iPoster Session.

Published onJun 29, 2022
Global Electric Fields in Nonequilibrium Inhomogeneous Heliospheric Plasma with Runaway Electrons

We prove that a nonequilibrium inhomogeneous giant gas discharge is realized in the heliosphere with huge values of the parameter E/N, which determines the temperature of electrons. This quasi-stationary discharge determines the main parameters of the slow solar wind (SW) in the heliosphere. In connection with the development of space technologies and the human spacewalk, the problem of the nature of the SW is acute. Pannekoek-Rosseland-Eddington model do not take into account the important role of highly energetic running (away from the Sun) electrons and, accordingly, the duality of electron fluxes in the heliosphere (from the Sun and to the Sun). According to an alternative model formulated by us, highly energetic (escaping from the positively charged Sun) electrons leave the Sun and the heliosphere, and weakly energetic ones, unable to leave the Coulomb potential well (hole) – the positively charged Sun and the heliosphere, return to the positively charged Sun. The weak difference between the opposite currents of highly energetic (escaping from the Sun) electrons and weakly energetic (returning to the Sun) electrons is compensated by the current of positive ions and protons from the Sun – SW. These dynamic processes maintain a quasi-constant effective dynamic charge of the Sun and the entire heliosphere. Quasi-neutrality in the Sun and heliosphere is well performed up to 10**-36. According to experiments and analytical calculations based on our model: 1) the plasma in the corona is nonequilibrium; 2) the maximum electron temperature is Te ~ 1-2 million degrees; 3) Te grows from 1000 km away from the Sun and 4) the role of highly energetic electrons escaping from the plasma leads to a significant increase in the effective: solar charge and electric fields in the heliosphere in relation to the Pannekoek-Rosseland-Eddington model. This is due to the absence of a compensation layer that screens the effective charge of the Sun It is not formed due to the escape of highly energetic electrons from the entire heliosphere with high temperatures exceeding the temperature of the Sun’s surface. The process of escape of highly energetic electrons forms the internal EMF of the entire heliosphere. It is being manifested in generation of two opposite flows of particles: 1) that are neutral or with a small charge (to the Sun), and 2) in the form of high-energy electrons (escaping from the positively charged Sun) and a solar wind with positively charged ions with Z/M ≥ 0.107 (from the positively charged Sun). Calculated values of the registered ion parameters in the solar wind were compared with experimental observations.

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