Interplanetary disturbances in the solar wind produced by density, temperature, or velocity pulses at 0.08 AU

Details Interplanetary disturbances in the solar wind produced by density, temperature, or velocity pulses at 0.08 AU Interplanetary disturbances in the solar wind produced by density, temperature, or velocity pulses at 0.08 AU

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...49..187w&link_type=abstract

Solar Physics, vol. 49, July 1976, p. 187-204.

Physics

16

Astronomical Models, Interplanetary Medium, Solar Activity Effects, Solar Flares, Solar Wind, Density Distribution, Gas Flow, Magnetohydrodynamic Stability, Plasma Density, Plasma-Particle Interactions, Rarefied Gas Dynamics, Temperature Distribution, Velocity Distribution

Scientific paper

Time-dependent solutions of a one-fluid model of the interplanetary medium are investigated. This set of unsteady hydrodynamic equations has been written in conserved form in order to apply the Lax-Wendroff (1960) method for the solution of this problem. The initial disturbance is specified by a pulse at 0.08 AU. Physically, this pulse can be interpreted as having been caused by a solar flare, surge, or any other solar disturbance. The equilibrium condition is determined to be the steady solution of the governing equations and represents the quiet solar wind. Results are presented in terms of density, temperature, and velocity profiles of the interplanetary gas flow at heliocentric distances up to 6 AU at several times. Also, the trajectories of disturbances for various initial pulses are shown. Some June 1972 interplanetary observational data are compared with these theoretical calculations. On the basis of these results, the effects of solar disturbances on the interplanetary environment (such as the generation of large nonlinear wave trains in the shock wakes) can be inferred.

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