Nature of the singular points and the stability of the flow in Holzer's model for decelerating the solar wind by neutral hydrogen atoms.

Details Nature of the singular points and the stability of the flow in Holzer's model for decelerating the solar wind by neutral hydrogen atoms. Nature of the singular points and the stability of the flow in Holzer's model for decelerating the solar wind by neutral hydrogen atoms.

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989cosre..27..330b&link_type=abstract

Cosmic Res., Vol. 27, No. 3, p. 330 - 338

Physics

Solar Wind: Deceleration

Scientific paper

The authors investigate questions regarding the existence and stability of continuous stationary flows in the vicinity of the singular points which occur in a system of one-dimensional equations of gas dynamics describing how the solar wind is decelerated by neutral atoms of interstellar hydrogen. The deceleration process occurs as a result of photoionization and change exchange of these atoms: The protons which are formed are subsequently trapped by the solar wind. The authors consider two limiting cases: In each of them they analyze the effects of photoionization and charge exchange respectively on the solar wind flow near the singular points. They have obtained the conditions in which it is possible to have a continuous transition to the regime of subsonic flow, and show that it is stable in the immediate neighborhood of the sonic point. They estimate the heliocentric radius at which the singular point is located, and determine the nature of the singular point for different cases. This question is important in studying how the solar wind may be declerated to subsonic velocities without the formation of a shock wave.

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