Dynamics of partially ionized gas in the gravitational field of the sun

Details Dynamics of partially ionized gas in the gravitational field of the sun Dynamics of partially ionized gas in the gravitational field of the sun

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975sva....19...54g&link_type=abstract

(Astronomicheskii Zhurnal, vol. 52, no. 1, 1975, p. 92-96.) Soviet Astronomy, vol. 19, July-Aug. 1975, p. 54-56. Translation.

Physics

Gas Dynamics, Gravitational Fields, Interstellar Gas, Ionized Gases, Pressure Effects, Solar Gravitation, Acceleration (Physics), Gas Pressure, Partial Pressure, Solar Wind Velocity, Ultraviolet Radiation

Scientific paper

The dynamics of interstellar gas, partially ionized by solar UV radiation, is analyzed. Ionization is shown to result in two pressures which must be taken into account: the pressure of the neutral component and the additional partial pressure of the ionized component. The existence of these two pressures leads to acceleration and, consequently, cooling of the gas stream at distances on the order of 10 AU from the sun. The possible role of this process in the deceleration of the solar wind is discussed.

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